vendor/github.com/golangci/golangci-lint: update to v1.31

go.mod

@@ -6,19 +6,45 @@ require (
 	cloud.google.com/go v0.60.0 // indirect
 	cloud.google.com/go/storage v1.10.0
 	github.com/BurntSushi/toml v0.3.1 // indirect
+	github.com/Djarvur/go-err113 v0.1.0 // indirect
+	github.com/coreos/go-etcd v2.0.0+incompatible // indirect
+	github.com/cpuguy83/go-md2man v1.0.10 // indirect
 	github.com/dvyukov/go-fuzz v0.0.0-20200318091601-be3528f3a813
+	github.com/go-lintpack/lintpack v0.5.2 // indirect
+	github.com/gogo/protobuf v1.3.1 // indirect
 	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
 	github.com/golang/protobuf v1.4.2 // indirect
-	github.com/golangci/golangci-lint v1.27.0
-	github.com/google/go-cmp v0.5.0
+	github.com/golangci/golangci-lint v1.31.0
+	github.com/golangci/misspell v0.3.5 // indirect
+	github.com/golangci/revgrep v0.0.0-20180812185044-276a5c0a1039 // indirect
+	github.com/google/go-cmp v0.5.2
 	github.com/googleapis/gax-go v1.0.4-0.20191018151119-b443e5a67ec8 // indirect
+	github.com/gostaticanalysis/analysisutil v0.2.1 // indirect
 	github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6
+	github.com/jirfag/go-printf-func-name v0.0.0-20200119135958-7558a9eaa5af // indirect
 	github.com/jstemmer/go-junit-report v0.9.2-0.20191008195320-984a47ca6b0a // indirect
-	golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2
+	github.com/klauspost/cpuid v1.2.0 // indirect
+	github.com/magiconair/properties v1.8.3 // indirect
+	github.com/matoous/godox v0.0.0-20200801072554-4fb83dc2941e // indirect
+	github.com/mitchellh/mapstructure v1.3.3 // indirect
+	github.com/pelletier/go-toml v1.8.1 // indirect
+	github.com/quasilyte/regex/syntax v0.0.0-20200805063351-8f842688393c // indirect
+	github.com/spf13/afero v1.4.0 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/stretchr/objx v0.3.0 // indirect
+	github.com/tdakkota/asciicheck v0.0.0-20200416200610-e657995f937b // indirect
+	github.com/timakin/bodyclose v0.0.0-20200424151742-cb6215831a94 // indirect
+	github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8 // indirect
+	golang.org/x/net v0.0.0-20200822124328-c89045814202
 	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
-	golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae
-	golang.org/x/text v0.3.3-0.20191230102452-929e72ca90de // indirect
-	golang.org/x/tools v0.0.0-20200626171337-aa94e735be7f
+	golang.org/x/sys v0.0.0-20200915084602-288bc346aa39
+	golang.org/x/tools v0.0.0-20200915031644-64986481280e
 	google.golang.org/api v0.28.0
 	google.golang.org/appengine v1.6.6
+	gopkg.in/ini.v1 v1.61.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 // indirect
+	mvdan.cc/gofumpt v0.0.0-20200802201014-ab5a8192947d // indirect
+	mvdan.cc/unparam v0.0.0-20200501210554-b37ab49443f7 // indirect
+	sourcegraph.com/sqs/pbtypes v1.0.0 // indirect
 )

go.sum

@@ -23,6 +23,7 @@ cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4g
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
@@ -40,17 +41,30 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Djarvur/go-err113 v0.0.0-20200410182137-af658d038157 h1:hY39LwQHh+1kaovmIjOrlqnXNX6tygSRfLkkK33IkZU=
 github.com/Djarvur/go-err113 v0.0.0-20200410182137-af658d038157/go.mod h1:4UJr5HIiMZrwgkSPdsjy2uOQExX/WEILpIrO9UPGuXs=
+github.com/Djarvur/go-err113 v0.0.0-20200511133814-5174e21577d5/go.mod h1:4UJr5HIiMZrwgkSPdsjy2uOQExX/WEILpIrO9UPGuXs=
+github.com/Djarvur/go-err113 v0.1.0 h1:uCRZZOdMQ0TZPHYTdYpoC0bLYJKPEHPUJ8MeAa51lNU=
+github.com/Djarvur/go-err113 v0.1.0/go.mod h1:4UJr5HIiMZrwgkSPdsjy2uOQExX/WEILpIrO9UPGuXs=
+github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
+github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/OpenPeeDeeP/depguard v1.0.1 h1:VlW4R6jmBIv3/u1JNlawEvJMM4J+dPORPaZasQee8Us=
 github.com/OpenPeeDeeP/depguard v1.0.1/go.mod h1:xsIw86fROiiwelg+jB2uM9PiKihMMmUx/1V+TNhjQvM=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/andybalholm/brotli v1.0.0/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
+github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
 github.com/bombsimon/wsl/v3 v3.0.0 h1:w9f49xQatuaeTJFaNP4SpiWSR5vfT6IstPtM62JjcqA=
 github.com/bombsimon/wsl/v3 v3.0.0/go.mod h1:st10JtZYLE4D5sC7b8xV4zTKZwAQjCH/Hy2Pm1FNZIc=
+github.com/bombsimon/wsl/v3 v3.1.0 h1:E5SRssoBgtVFPcYWUOFJEcgaySgdtTNYzsSKDOY7ss8=
+github.com/bombsimon/wsl/v3 v3.1.0/go.mod h1:st10JtZYLE4D5sC7b8xV4zTKZwAQjCH/Hy2Pm1FNZIc=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
@@ -60,15 +74,22 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/daixiang0/gci v0.2.4 h1:BUCKk5nlK2m+kRIsoj+wb/5hazHvHeZieBKWd9Afa8Q=
+github.com/daixiang0/gci v0.2.4/go.mod h1:+AV8KmHTGxxwp/pY84TLQfFKp2vuKXXJVzF3kD/hfR4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/denis-tingajkin/go-header v0.3.1 h1:ymEpSiFjeItCy1FOP+x0M2KdCELdEAHUsNa8F+hHc6w=
+github.com/denis-tingajkin/go-header v0.3.1/go.mod h1:sq/2IxMhaZX+RRcgHfCRx/m0M5na0fBt4/CRe7Lrji0=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/dvyukov/go-fuzz v0.0.0-20200318091601-be3528f3a813 h1:NgO45/5mBLRVfiXerEFzH6ikcZ7DNRPS639xFg3ENzU=
@@ -79,11 +100,17 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
+github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
+github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
+github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-critic/go-critic v0.4.1 h1:4DTQfT1wWwLg/hzxwD9bkdhDQrdJtxe6DUTadPlrIeE=
 github.com/go-critic/go-critic v0.4.1/go.mod h1:7/14rZGnZbY6E38VEGk2kVhoq6itzc1E68facVDK23g=
+github.com/go-critic/go-critic v0.5.2 h1:3RJdgf6u4NZUumoP8nzbqiiNT8e1tC2Oc7jlgqre/IA=
+github.com/go-critic/go-critic v0.5.2/go.mod h1:cc0+HvdE3lFpqLecgqMaJcvWWH77sLdBp+wLGPM1Yyo=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -115,14 +142,20 @@ github.com/go-toolsmith/strparse v1.0.0 h1:Vcw78DnpCAKlM20kSbAyO4mPfJn/lyYA4BJUD
 github.com/go-toolsmith/strparse v1.0.0/go.mod h1:YI2nUKP9YGZnL/L1/DLFBfixrcjslWct4wyljWhSRy8=
 github.com/go-toolsmith/typep v1.0.0 h1:zKymWyA1TRYvqYrYDrfEMZULyrhcnGY3x7LDKU2XQaA=
 github.com/go-toolsmith/typep v1.0.0/go.mod h1:JSQCQMUPdRlMZFswiq3TGpNp1GMktqkR2Ns5AIQkATU=
+github.com/go-toolsmith/typep v1.0.2 h1:8xdsa1+FSIH/RhEkgnD1j2CJOy5mNllW1Q9tRiYwvlk=
+github.com/go-toolsmith/typep v1.0.2/go.mod h1:JSQCQMUPdRlMZFswiq3TGpNp1GMktqkR2Ns5AIQkATU=
+github.com/go-xmlfmt/xmlfmt v0.0.0-20191208150333-d5b6f63a941b h1:khEcpUM4yFcxg4/FHQWkvVRmgijNXRfzkIDHh23ggEo=
 github.com/go-xmlfmt/xmlfmt v0.0.0-20191208150333-d5b6f63a941b/go.mod h1:aUCEOzzezBEjDBbFBoSiya/gduyIiWYRP6CnSFIV8AM=
 github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
 github.com/gofrs/flock v0.0.0-20190320160742-5135e617513b h1:ekuhfTjngPhisSjOJ0QWKpPQE8/rbknHaes6WVJj5Hw=
 github.com/gofrs/flock v0.0.0-20190320160742-5135e617513b/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
+github.com/gofrs/flock v0.8.0 h1:MSdYClljsF3PbENUUEx85nkWfJSGfzYI9yEBZOJz6CY=
+github.com/gofrs/flock v0.8.0/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
+github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -162,10 +195,14 @@ github.com/golangci/goconst v0.0.0-20180610141641-041c5f2b40f3 h1:pe9JHs3cHHDQgO
 github.com/golangci/goconst v0.0.0-20180610141641-041c5f2b40f3/go.mod h1:JXrF4TWy4tXYn62/9x8Wm/K/dm06p8tCKwFRDPZG/1o=
 github.com/golangci/gocyclo v0.0.0-20180528134321-2becd97e67ee h1:J2XAy40+7yz70uaOiMbNnluTg7gyQhtGqLQncQh+4J8=
 github.com/golangci/gocyclo v0.0.0-20180528134321-2becd97e67ee/go.mod h1:ozx7R9SIwqmqf5pRP90DhR2Oay2UIjGuKheCBCNwAYU=
+github.com/golangci/gocyclo v0.0.0-20180528144436-0a533e8fa43d h1:pXTK/gkVNs7Zyy7WKgLXmpQ5bHTrq5GDsp8R9Qs67g0=
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@@ -174,10 +211,14 @@ github.com/golangci/maligned v0.0.0-20180506175553-b1d89398deca h1:kNY3/svz5T29M
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@@ -190,6 +231,9 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -206,17 +250,41 @@ github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+
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@@ -226,8 +294,12 @@ github.com/jingyugao/rowserrcheck v0.0.0-20191204022205-72ab7603b68a h1:Gmsqmapf
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@@ -235,40 +307,71 @@ github.com/jstemmer/go-junit-report v0.9.2-0.20191008195320-984a47ca6b0a/go.mod
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@@ -358,18 +526,24 @@ github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGr
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@@ -382,11 +556,14 @@ go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
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@@ -426,7 +603,9 @@ golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73r
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@@ -449,8 +628,13 @@ golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/
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@@ -464,9 +648,12 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -480,11 +667,15 @@ golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -496,21 +687,28 @@ golang.org/x/sys v0.0.0-20200331124033-c3d80250170d/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -535,6 +733,7 @@ golang.org/x/tools v0.0.0-20190910044552-dd2b5c81c578/go.mod h1:b+2E5dAYhXwXZwtn
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@@ -544,6 +743,7 @@ golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapK
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@@ -555,22 +755,35 @@ golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapK
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@@ -661,6 +874,8 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
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@@ -669,6 +884,12 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 h1:tQIYjPdBoyREyB9XMu+nnTclpTYkz2zFM+lzLJFO4gQ=
+gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
@@ -679,14 +900,23 @@ honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.5 h1:nI5egYTGJakVyOryqLs1cQO5dO0ksin5XXs2pspk75k=
+honnef.co/go/tools v0.0.1-2020.1.5/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+mvdan.cc/gofumpt v0.0.0-20200709182408-4fd085cb6d5f h1:gi7cb8HTDZ6q8VqsUpkdoFi3vxwHMneQ6+Q5Ap5hjPE=
+mvdan.cc/gofumpt v0.0.0-20200709182408-4fd085cb6d5f/go.mod h1:9VQ397fNXEnF84t90W4r4TRCQK+pg9f8ugVfyj+S26w=
+mvdan.cc/gofumpt v0.0.0-20200802201014-ab5a8192947d h1:t8TAw9WgTLghti7RYkpPmqk4JtQ3+wcP5GgZqgWeWLQ=
+mvdan.cc/gofumpt v0.0.0-20200802201014-ab5a8192947d/go.mod h1:bzrjFmaD6+xqohD3KYP0H2FEuxknnBmyyOxdhLdaIws=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed h1:WX1yoOaKQfddO/mLzdV4wptyWgoH/6hwLs7QHTixo0I=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc=
 mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b h1:DxJ5nJdkhDlLok9K6qO+5290kphDJbHOQO1DFFFTeBo=
 mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b/go.mod h1:2odslEg/xrtNQqCYg2/jCoyKnw3vv5biOc3JnIcYfL4=
 mvdan.cc/unparam v0.0.0-20190720180237-d51796306d8f h1:Cq7MalBHYACRd6EesksG1Q8EoIAKOsiZviGKbOLIej4=
 mvdan.cc/unparam v0.0.0-20190720180237-d51796306d8f/go.mod h1:4G1h5nDURzA3bwVMZIVpwbkw+04kSxk3rAtzlimaUJw=
+mvdan.cc/unparam v0.0.0-20200501210554-b37ab49443f7 h1:kAREL6MPwpsk1/PQPFD3Eg7WAQR5mPTWZJaBiG5LDbY=
+mvdan.cc/unparam v0.0.0-20200501210554-b37ab49443f7/go.mod h1:HGC5lll35J70Y5v7vCGb9oLhHoScFwkHDJm/05RdSTc=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4 h1:JPJh2pk3+X4lXAkZIk2RuE/7/FoK9maXw+TNPJhVS/c=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
+sourcegraph.com/sqs/pbtypes v1.0.0/go.mod h1:3AciMUv4qUuRHRHhOG4TZOB+72GdPVz5k+c648qsFS4=

vendor/github.com/Djarvur/go-err113/README.adoc

@@ -23,7 +23,7 @@ So, `err113` reports every `==` and `!=` comparison for exact `error` type varia
 
 Also, any call of `errors.New()` and `fmt.Errorf()` methods are reported except the calls used to initialise package-level variables and the `fmt.Errorf()` calls wrapping the other errors.
 
-Note: non-standard packages, like `github.com/pkg/errors` are ignored complitely.
+Note: non-standard packages, like `github.com/pkg/errors` are ignored completely.
 
 == Install
 
@@ -71,3 +71,5 @@ Flags:
 == Thanks
 
 To link:https://github.com/quasilyte[Iskander (Alex) Sharipov] for the really useful advices.
+
+To link:https://github.com/jackwhelpton[Jack Whelpton] for the bugfix provided.

vendor/github.com/Djarvur/go-err113/comparison.go

@@ -21,18 +21,7 @@ func inspectComparision(pass *analysis.Pass, n ast.Node) bool { // nolint: unpar
 		return true
 	}
 
-	// check that both left and right hand side are not nil
-	if pass.TypesInfo.Types[be.X].IsNil() || pass.TypesInfo.Types[be.Y].IsNil() {
-		return true
-	}
-
-	// check that both left and right hand side are not io.EOF
-	if isEOF(be.X, pass.TypesInfo) || isEOF(be.Y, pass.TypesInfo) {
-		return true
-	}
-
-	// check that both left and right hand side are errors
-	if !isError(be.X, pass.TypesInfo) && !isError(be.Y, pass.TypesInfo) {
+	if !areBothErrors(be.X, be.Y, pass.TypesInfo) {
 		return true
 	}
 
@@ -99,5 +88,24 @@ func asImportedName(ex ast.Expr, info *types.Info) (string, bool) {
 		return "", false
 	}
 
-	return ep.Imported().Name(), true
+	return ep.Imported().Path(), true
+}
+
+func areBothErrors(x, y ast.Expr, typesInfo *types.Info) bool {
+	// check that both left and right hand side are not nil
+	if typesInfo.Types[x].IsNil() || typesInfo.Types[y].IsNil() {
+		return false
+	}
+
+	// check that both left and right hand side are not io.EOF
+	if isEOF(x, typesInfo) || isEOF(y, typesInfo) {
+		return false
+	}
+
+	// check that both left and right hand side are errors
+	if !isError(x, typesInfo) && !isError(y, typesInfo) {
+		return false
+	}
+
+	return true
 }

vendor/github.com/Djarvur/go-err113/err113.go

@@ -10,7 +10,7 @@ import (
 	"golang.org/x/tools/go/analysis"
 )
 
-// NewAnalyzer creates a new analysis.Analyzer instance tuned to run err113 checks
+// NewAnalyzer creates a new analysis.Analyzer instance tuned to run err113 checks.
 func NewAnalyzer() *analysis.Analyzer {
 	return &analysis.Analyzer{
 		Name: "err113",
@@ -35,7 +35,7 @@ func run(pass *analysis.Pass) (interface{}, error) {
 	return nil, nil
 }
 
-// render returns the pretty-print of the given node
+// render returns the pretty-print of the given node.
 func render(fset *token.FileSet, x interface{}) string {
 	var buf bytes.Buffer
 	if err := printer.Fprint(&buf, fset, x); err != nil {

vendor/github.com/Masterminds/semver/.travis.yml

@@ -0,0 +1,29 @@
+language: go
+
+go:
+  - 1.6.x
+  - 1.7.x
+  - 1.8.x
+  - 1.9.x
+  - 1.10.x
+  - 1.11.x
+  - 1.12.x
+  - tip
+
+# Setting sudo access to false will let Travis CI use containers rather than
+# VMs to run the tests. For more details see:
+# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
+# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
+sudo: false
+
+script:
+  - make setup
+  - make test
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/06e3328629952dabe3e0
+    on_success: change  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: never     # options: [always|never|change] default: always

vendor/github.com/Masterminds/semver/CHANGELOG.md

@@ -0,0 +1,109 @@
+# 1.5.0 (2019-09-11)
+
+## Added
+
+- #103: Add basic fuzzing for `NewVersion()` (thanks @jesse-c)
+
+## Changed
+
+- #82: Clarify wildcard meaning in range constraints and update tests for it (thanks @greysteil)
+- #83: Clarify caret operator range for pre-1.0.0 dependencies (thanks @greysteil)
+- #72: Adding docs comment pointing to vert for a cli
+- #71: Update the docs on pre-release comparator handling
+- #89: Test with new go versions (thanks @thedevsaddam)
+- #87: Added $ to ValidPrerelease for better validation (thanks @jeremycarroll)
+
+## Fixed
+
+- #78: Fix unchecked error in example code (thanks @ravron)
+- #70: Fix the handling of pre-releases and the 0.0.0 release edge case
+- #97: Fixed copyright file for proper display on GitHub
+- #107: Fix handling prerelease when sorting alphanum and num 
+- #109: Fixed where Validate sometimes returns wrong message on error
+
+# 1.4.2 (2018-04-10)
+
+## Changed
+- #72: Updated the docs to point to vert for a console appliaction
+- #71: Update the docs on pre-release comparator handling
+
+## Fixed
+- #70: Fix the handling of pre-releases and the 0.0.0 release edge case
+
+# 1.4.1 (2018-04-02)
+
+## Fixed
+- Fixed #64: Fix pre-release precedence issue (thanks @uudashr)
+
+# 1.4.0 (2017-10-04)
+
+## Changed
+- #61: Update NewVersion to parse ints with a 64bit int size (thanks @zknill)
+
+# 1.3.1 (2017-07-10)
+
+## Fixed
+- Fixed #57: number comparisons in prerelease sometimes inaccurate
+
+# 1.3.0 (2017-05-02)
+
+## Added
+- #45: Added json (un)marshaling support (thanks @mh-cbon)
+- Stability marker. See https://masterminds.github.io/stability/
+
+## Fixed
+- #51: Fix handling of single digit tilde constraint (thanks @dgodd)
+
+## Changed
+- #55: The godoc icon moved from png to svg
+
+# 1.2.3 (2017-04-03)
+
+## Fixed
+- #46: Fixed 0.x.x and 0.0.x in constraints being treated as *
+
+# Release 1.2.2 (2016-12-13)
+
+## Fixed
+- #34: Fixed issue where hyphen range was not working with pre-release parsing.
+
+# Release 1.2.1 (2016-11-28)
+
+## Fixed
+- #24: Fixed edge case issue where constraint "> 0" does not handle "0.0.1-alpha"
+  properly.
+
+# Release 1.2.0 (2016-11-04)
+
+## Added
+- #20: Added MustParse function for versions (thanks @adamreese)
+- #15: Added increment methods on versions (thanks @mh-cbon)
+
+## Fixed
+- Issue #21: Per the SemVer spec (section 9) a pre-release is unstable and
+  might not satisfy the intended compatibility. The change here ignores pre-releases
+  on constraint checks (e.g., ~ or ^) when a pre-release is not part of the
+  constraint. For example, `^1.2.3` will ignore pre-releases while
+  `^1.2.3-alpha` will include them.
+
+# Release 1.1.1 (2016-06-30)
+
+## Changed
+- Issue #9: Speed up version comparison performance (thanks @sdboyer)
+- Issue #8: Added benchmarks (thanks @sdboyer)
+- Updated Go Report Card URL to new location
+- Updated Readme to add code snippet formatting (thanks @mh-cbon)
+- Updating tagging to v[SemVer] structure for compatibility with other tools.
+
+# Release 1.1.0 (2016-03-11)
+
+- Issue #2: Implemented validation to provide reasons a versions failed a
+  constraint.
+
+# Release 1.0.1 (2015-12-31)
+
+- Fixed #1: * constraint failing on valid versions.
+
+# Release 1.0.0 (2015-10-20)
+
+- Initial release

vendor/github.com/Masterminds/semver/LICENSE.txt

@@ -0,0 +1,19 @@
+Copyright (C) 2014-2019, Matt Butcher and Matt Farina
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/Masterminds/semver/Makefile

@@ -0,0 +1,36 @@
+.PHONY: setup
+setup:
+	go get -u gopkg.in/alecthomas/gometalinter.v1
+	gometalinter.v1 --install
+
+.PHONY: test
+test: validate lint
+	@echo "==> Running tests"
+	go test -v
+
+.PHONY: validate
+validate:
+	@echo "==> Running static validations"
+	@gometalinter.v1 \
+	  --disable-all \
+	  --enable deadcode \
+	  --severity deadcode:error \
+	  --enable gofmt \
+	  --enable gosimple \
+	  --enable ineffassign \
+	  --enable misspell \
+	  --enable vet \
+	  --tests \
+	  --vendor \
+	  --deadline 60s \
+	  ./... || exit_code=1
+
+.PHONY: lint
+lint:
+	@echo "==> Running linters"
+	@gometalinter.v1 \
+	  --disable-all \
+	  --enable golint \
+	  --vendor \
+	  --deadline 60s \
+	  ./... || :

vendor/github.com/Masterminds/semver/README.md

@@ -0,0 +1,194 @@
+# SemVer
+
+The `semver` package provides the ability to work with [Semantic Versions](http://semver.org) in Go. Specifically it provides the ability to:
+
+* Parse semantic versions
+* Sort semantic versions
+* Check if a semantic version fits within a set of constraints
+* Optionally work with a `v` prefix
+
+[![Stability:
+Active](https://masterminds.github.io/stability/active.svg)](https://masterminds.github.io/stability/active.html)
+[![Build Status](https://travis-ci.org/Masterminds/semver.svg)](https://travis-ci.org/Masterminds/semver) [![Build status](https://ci.appveyor.com/api/projects/status/jfk66lib7hb985k8/branch/master?svg=true&passingText=windows%20build%20passing&failingText=windows%20build%20failing)](https://ci.appveyor.com/project/mattfarina/semver/branch/master) [![GoDoc](https://godoc.org/github.com/Masterminds/semver?status.svg)](https://godoc.org/github.com/Masterminds/semver) [![Go Report Card](https://goreportcard.com/badge/github.com/Masterminds/semver)](https://goreportcard.com/report/github.com/Masterminds/semver)
+
+If you are looking for a command line tool for version comparisons please see
+[vert](https://github.com/Masterminds/vert) which uses this library.
+
+## Parsing Semantic Versions
+
+To parse a semantic version use the `NewVersion` function. For example,
+
+```go
+    v, err := semver.NewVersion("1.2.3-beta.1+build345")
+```
+
+If there is an error the version wasn't parseable. The version object has methods
+to get the parts of the version, compare it to other versions, convert the
+version back into a string, and get the original string. For more details
+please see the [documentation](https://godoc.org/github.com/Masterminds/semver).
+
+## Sorting Semantic Versions
+
+A set of versions can be sorted using the [`sort`](https://golang.org/pkg/sort/)
+package from the standard library. For example,
+
+```go
+    raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
+    vs := make([]*semver.Version, len(raw))
+	for i, r := range raw {
+		v, err := semver.NewVersion(r)
+		if err != nil {
+			t.Errorf("Error parsing version: %s", err)
+		}
+
+		vs[i] = v
+	}
+
+	sort.Sort(semver.Collection(vs))
+```
+
+## Checking Version Constraints
+
+Checking a version against version constraints is one of the most featureful
+parts of the package.
+
+```go
+    c, err := semver.NewConstraint(">= 1.2.3")
+    if err != nil {
+        // Handle constraint not being parseable.
+    }
+
+    v, _ := semver.NewVersion("1.3")
+    if err != nil {
+        // Handle version not being parseable.
+    }
+    // Check if the version meets the constraints. The a variable will be true.
+    a := c.Check(v)
+```
+
+## Basic Comparisons
+
+There are two elements to the comparisons. First, a comparison string is a list
+of comma separated and comparisons. These are then separated by || separated or
+comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
+comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
+greater than or equal to 4.2.3.
+
+The basic comparisons are:
+
+* `=`: equal (aliased to no operator)
+* `!=`: not equal
+* `>`: greater than
+* `<`: less than
+* `>=`: greater than or equal to
+* `<=`: less than or equal to
+
+## Working With Pre-release Versions
+
+Pre-releases, for those not familiar with them, are used for software releases
+prior to stable or generally available releases. Examples of pre-releases include
+development, alpha, beta, and release candidate releases. A pre-release may be
+a version such as `1.2.3-beta.1` while the stable release would be `1.2.3`. In the
+order of precidence, pre-releases come before their associated releases. In this
+example `1.2.3-beta.1 < 1.2.3`.
+
+According to the Semantic Version specification pre-releases may not be
+API compliant with their release counterpart. It says,
+
+> A pre-release version indicates that the version is unstable and might not satisfy the intended compatibility requirements as denoted by its associated normal version.
+
+SemVer comparisons without a pre-release comparator will skip pre-release versions.
+For example, `>=1.2.3` will skip pre-releases when looking at a list of releases
+while `>=1.2.3-0` will evaluate and find pre-releases.
+
+The reason for the `0` as a pre-release version in the example comparison is
+because pre-releases can only contain ASCII alphanumerics and hyphens (along with
+`.` separators), per the spec. Sorting happens in ASCII sort order, again per the spec. The lowest character is a `0` in ASCII sort order (see an [ASCII Table](http://www.asciitable.com/))
+
+Understanding ASCII sort ordering is important because A-Z comes before a-z. That
+means `>=1.2.3-BETA` will return `1.2.3-alpha`. What you might expect from case
+sensitivity doesn't apply here. This is due to ASCII sort ordering which is what
+the spec specifies.
+
+## Hyphen Range Comparisons
+
+There are multiple methods to handle ranges and the first is hyphens ranges.
+These look like:
+
+* `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
+* `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
+
+## Wildcards In Comparisons
+
+The `x`, `X`, and `*` characters can be used as a wildcard character. This works
+for all comparison operators. When used on the `=` operator it falls
+back to the pack level comparison (see tilde below). For example,
+
+* `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
+* `>= 1.2.x` is equivalent to `>= 1.2.0`
+* `<= 2.x` is equivalent to `< 3`
+* `*` is equivalent to `>= 0.0.0`
+
+## Tilde Range Comparisons (Patch)
+
+The tilde (`~`) comparison operator is for patch level ranges when a minor
+version is specified and major level changes when the minor number is missing.
+For example,
+
+* `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
+* `~1` is equivalent to `>= 1, < 2`
+* `~2.3` is equivalent to `>= 2.3, < 2.4`
+* `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
+* `~1.x` is equivalent to `>= 1, < 2`
+
+## Caret Range Comparisons (Major)
+
+The caret (`^`) comparison operator is for major level changes. This is useful
+when comparisons of API versions as a major change is API breaking. For example,
+
+* `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
+* `^0.0.1` is equivalent to `>= 0.0.1, < 1.0.0`
+* `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
+* `^2.3` is equivalent to `>= 2.3, < 3`
+* `^2.x` is equivalent to `>= 2.0.0, < 3`
+
+# Validation
+
+In addition to testing a version against a constraint, a version can be validated
+against a constraint. When validation fails a slice of errors containing why a
+version didn't meet the constraint is returned. For example,
+
+```go
+    c, err := semver.NewConstraint("<= 1.2.3, >= 1.4")
+    if err != nil {
+        // Handle constraint not being parseable.
+    }
+
+    v, _ := semver.NewVersion("1.3")
+    if err != nil {
+        // Handle version not being parseable.
+    }
+
+    // Validate a version against a constraint.
+    a, msgs := c.Validate(v)
+    // a is false
+    for _, m := range msgs {
+        fmt.Println(m)
+
+        // Loops over the errors which would read
+        // "1.3 is greater than 1.2.3"
+        // "1.3 is less than 1.4"
+    }
+```
+
+# Fuzzing
+
+ [dvyukov/go-fuzz](https://github.com/dvyukov/go-fuzz) is used for fuzzing.
+
+1. `go-fuzz-build`
+2. `go-fuzz -workdir=fuzz`
+
+# Contribute
+
+If you find an issue or want to contribute please file an [issue](https://github.com/Masterminds/semver/issues)
+or [create a pull request](https://github.com/Masterminds/semver/pulls).

vendor/github.com/Masterminds/semver/appveyor.yml

@@ -0,0 +1,44 @@
+version: build-{build}.{branch}
+
+clone_folder: C:\gopath\src\github.com\Masterminds\semver
+shallow_clone: true
+
+environment:
+  GOPATH: C:\gopath
+
+platform:
+  - x64
+
+install:
+  - go version
+  - go env
+  - go get -u gopkg.in/alecthomas/gometalinter.v1
+  - set PATH=%PATH%;%GOPATH%\bin
+  - gometalinter.v1.exe --install
+
+build_script:
+  - go install -v ./...
+
+test_script:
+  - "gometalinter.v1 \
+    --disable-all \
+    --enable deadcode \
+    --severity deadcode:error \
+    --enable gofmt \
+    --enable gosimple \
+    --enable ineffassign \
+    --enable misspell \
+    --enable vet \
+    --tests \
+    --vendor \
+    --deadline 60s \
+    ./... || exit_code=1"
+  - "gometalinter.v1 \
+    --disable-all \
+    --enable golint \
+    --vendor \
+    --deadline 60s \
+    ./... || :"
+  - go test -v
+
+deploy: off

vendor/github.com/Masterminds/semver/collection.go

@@ -0,0 +1,24 @@
+package semver
+
+// Collection is a collection of Version instances and implements the sort
+// interface. See the sort package for more details.
+// https://golang.org/pkg/sort/
+type Collection []*Version
+
+// Len returns the length of a collection. The number of Version instances
+// on the slice.
+func (c Collection) Len() int {
+	return len(c)
+}
+
+// Less is needed for the sort interface to compare two Version objects on the
+// slice. If checks if one is less than the other.
+func (c Collection) Less(i, j int) bool {
+	return c[i].LessThan(c[j])
+}
+
+// Swap is needed for the sort interface to replace the Version objects
+// at two different positions in the slice.
+func (c Collection) Swap(i, j int) {
+	c[i], c[j] = c[j], c[i]
+}

vendor/github.com/Masterminds/semver/constraints.go

@@ -0,0 +1,423 @@
+package semver
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+// Constraints is one or more constraint that a semantic version can be
+// checked against.
+type Constraints struct {
+	constraints [][]*constraint
+}
+
+// NewConstraint returns a Constraints instance that a Version instance can
+// be checked against. If there is a parse error it will be returned.
+func NewConstraint(c string) (*Constraints, error) {
+
+	// Rewrite - ranges into a comparison operation.
+	c = rewriteRange(c)
+
+	ors := strings.Split(c, "||")
+	or := make([][]*constraint, len(ors))
+	for k, v := range ors {
+		cs := strings.Split(v, ",")
+		result := make([]*constraint, len(cs))
+		for i, s := range cs {
+			pc, err := parseConstraint(s)
+			if err != nil {
+				return nil, err
+			}
+
+			result[i] = pc
+		}
+		or[k] = result
+	}
+
+	o := &Constraints{constraints: or}
+	return o, nil
+}
+
+// Check tests if a version satisfies the constraints.
+func (cs Constraints) Check(v *Version) bool {
+	// loop over the ORs and check the inner ANDs
+	for _, o := range cs.constraints {
+		joy := true
+		for _, c := range o {
+			if !c.check(v) {
+				joy = false
+				break
+			}
+		}
+
+		if joy {
+			return true
+		}
+	}
+
+	return false
+}
+
+// Validate checks if a version satisfies a constraint. If not a slice of
+// reasons for the failure are returned in addition to a bool.
+func (cs Constraints) Validate(v *Version) (bool, []error) {
+	// loop over the ORs and check the inner ANDs
+	var e []error
+
+	// Capture the prerelease message only once. When it happens the first time
+	// this var is marked
+	var prerelesase bool
+	for _, o := range cs.constraints {
+		joy := true
+		for _, c := range o {
+			// Before running the check handle the case there the version is
+			// a prerelease and the check is not searching for prereleases.
+			if c.con.pre == "" && v.pre != "" {
+				if !prerelesase {
+					em := fmt.Errorf("%s is a prerelease version and the constraint is only looking for release versions", v)
+					e = append(e, em)
+					prerelesase = true
+				}
+				joy = false
+
+			} else {
+
+				if !c.check(v) {
+					em := fmt.Errorf(c.msg, v, c.orig)
+					e = append(e, em)
+					joy = false
+				}
+			}
+		}
+
+		if joy {
+			return true, []error{}
+		}
+	}
+
+	return false, e
+}
+
+var constraintOps map[string]cfunc
+var constraintMsg map[string]string
+var constraintRegex *regexp.Regexp
+
+func init() {
+	constraintOps = map[string]cfunc{
+		"":   constraintTildeOrEqual,
+		"=":  constraintTildeOrEqual,
+		"!=": constraintNotEqual,
+		">":  constraintGreaterThan,
+		"<":  constraintLessThan,
+		">=": constraintGreaterThanEqual,
+		"=>": constraintGreaterThanEqual,
+		"<=": constraintLessThanEqual,
+		"=<": constraintLessThanEqual,
+		"~":  constraintTilde,
+		"~>": constraintTilde,
+		"^":  constraintCaret,
+	}
+
+	constraintMsg = map[string]string{
+		"":   "%s is not equal to %s",
+		"=":  "%s is not equal to %s",
+		"!=": "%s is equal to %s",
+		">":  "%s is less than or equal to %s",
+		"<":  "%s is greater than or equal to %s",
+		">=": "%s is less than %s",
+		"=>": "%s is less than %s",
+		"<=": "%s is greater than %s",
+		"=<": "%s is greater than %s",
+		"~":  "%s does not have same major and minor version as %s",
+		"~>": "%s does not have same major and minor version as %s",
+		"^":  "%s does not have same major version as %s",
+	}
+
+	ops := make([]string, 0, len(constraintOps))
+	for k := range constraintOps {
+		ops = append(ops, regexp.QuoteMeta(k))
+	}
+
+	constraintRegex = regexp.MustCompile(fmt.Sprintf(
+		`^\s*(%s)\s*(%s)\s*$`,
+		strings.Join(ops, "|"),
+		cvRegex))
+
+	constraintRangeRegex = regexp.MustCompile(fmt.Sprintf(
+		`\s*(%s)\s+-\s+(%s)\s*`,
+		cvRegex, cvRegex))
+}
+
+// An individual constraint
+type constraint struct {
+	// The callback function for the restraint. It performs the logic for
+	// the constraint.
+	function cfunc
+
+	msg string
+
+	// The version used in the constraint check. For example, if a constraint
+	// is '<= 2.0.0' the con a version instance representing 2.0.0.
+	con *Version
+
+	// The original parsed version (e.g., 4.x from != 4.x)
+	orig string
+
+	// When an x is used as part of the version (e.g., 1.x)
+	minorDirty bool
+	dirty      bool
+	patchDirty bool
+}
+
+// Check if a version meets the constraint
+func (c *constraint) check(v *Version) bool {
+	return c.function(v, c)
+}
+
+type cfunc func(v *Version, c *constraint) bool
+
+func parseConstraint(c string) (*constraint, error) {
+	m := constraintRegex.FindStringSubmatch(c)
+	if m == nil {
+		return nil, fmt.Errorf("improper constraint: %s", c)
+	}
+
+	ver := m[2]
+	orig := ver
+	minorDirty := false
+	patchDirty := false
+	dirty := false
+	if isX(m[3]) {
+		ver = "0.0.0"
+		dirty = true
+	} else if isX(strings.TrimPrefix(m[4], ".")) || m[4] == "" {
+		minorDirty = true
+		dirty = true
+		ver = fmt.Sprintf("%s.0.0%s", m[3], m[6])
+	} else if isX(strings.TrimPrefix(m[5], ".")) {
+		dirty = true
+		patchDirty = true
+		ver = fmt.Sprintf("%s%s.0%s", m[3], m[4], m[6])
+	}
+
+	con, err := NewVersion(ver)
+	if err != nil {
+
+		// The constraintRegex should catch any regex parsing errors. So,
+		// we should never get here.
+		return nil, errors.New("constraint Parser Error")
+	}
+
+	cs := &constraint{
+		function:   constraintOps[m[1]],
+		msg:        constraintMsg[m[1]],
+		con:        con,
+		orig:       orig,
+		minorDirty: minorDirty,
+		patchDirty: patchDirty,
+		dirty:      dirty,
+	}
+	return cs, nil
+}
+
+// Constraint functions
+func constraintNotEqual(v *Version, c *constraint) bool {
+	if c.dirty {
+
+		// If there is a pre-release on the version but the constraint isn't looking
+		// for them assume that pre-releases are not compatible. See issue 21 for
+		// more details.
+		if v.Prerelease() != "" && c.con.Prerelease() == "" {
+			return false
+		}
+
+		if c.con.Major() != v.Major() {
+			return true
+		}
+		if c.con.Minor() != v.Minor() && !c.minorDirty {
+			return true
+		} else if c.minorDirty {
+			return false
+		}
+
+		return false
+	}
+
+	return !v.Equal(c.con)
+}
+
+func constraintGreaterThan(v *Version, c *constraint) bool {
+
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	return v.Compare(c.con) == 1
+}
+
+func constraintLessThan(v *Version, c *constraint) bool {
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	if !c.dirty {
+		return v.Compare(c.con) < 0
+	}
+
+	if v.Major() > c.con.Major() {
+		return false
+	} else if v.Minor() > c.con.Minor() && !c.minorDirty {
+		return false
+	}
+
+	return true
+}
+
+func constraintGreaterThanEqual(v *Version, c *constraint) bool {
+
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	return v.Compare(c.con) >= 0
+}
+
+func constraintLessThanEqual(v *Version, c *constraint) bool {
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	if !c.dirty {
+		return v.Compare(c.con) <= 0
+	}
+
+	if v.Major() > c.con.Major() {
+		return false
+	} else if v.Minor() > c.con.Minor() && !c.minorDirty {
+		return false
+	}
+
+	return true
+}
+
+// ~*, ~>* --> >= 0.0.0 (any)
+// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0, <3.0.0
+// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0, <2.1.0
+// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0, <1.3.0
+// ~1.2.3, ~>1.2.3 --> >=1.2.3, <1.3.0
+// ~1.2.0, ~>1.2.0 --> >=1.2.0, <1.3.0
+func constraintTilde(v *Version, c *constraint) bool {
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	if v.LessThan(c.con) {
+		return false
+	}
+
+	// ~0.0.0 is a special case where all constraints are accepted. It's
+	// equivalent to >= 0.0.0.
+	if c.con.Major() == 0 && c.con.Minor() == 0 && c.con.Patch() == 0 &&
+		!c.minorDirty && !c.patchDirty {
+		return true
+	}
+
+	if v.Major() != c.con.Major() {
+		return false
+	}
+
+	if v.Minor() != c.con.Minor() && !c.minorDirty {
+		return false
+	}
+
+	return true
+}
+
+// When there is a .x (dirty) status it automatically opts in to ~. Otherwise
+// it's a straight =
+func constraintTildeOrEqual(v *Version, c *constraint) bool {
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	if c.dirty {
+		c.msg = constraintMsg["~"]
+		return constraintTilde(v, c)
+	}
+
+	return v.Equal(c.con)
+}
+
+// ^* --> (any)
+// ^2, ^2.x, ^2.x.x --> >=2.0.0, <3.0.0
+// ^2.0, ^2.0.x --> >=2.0.0, <3.0.0
+// ^1.2, ^1.2.x --> >=1.2.0, <2.0.0
+// ^1.2.3 --> >=1.2.3, <2.0.0
+// ^1.2.0 --> >=1.2.0, <2.0.0
+func constraintCaret(v *Version, c *constraint) bool {
+	// If there is a pre-release on the version but the constraint isn't looking
+	// for them assume that pre-releases are not compatible. See issue 21 for
+	// more details.
+	if v.Prerelease() != "" && c.con.Prerelease() == "" {
+		return false
+	}
+
+	if v.LessThan(c.con) {
+		return false
+	}
+
+	if v.Major() != c.con.Major() {
+		return false
+	}
+
+	return true
+}
+
+var constraintRangeRegex *regexp.Regexp
+
+const cvRegex string = `v?([0-9|x|X|\*]+)(\.[0-9|x|X|\*]+)?(\.[0-9|x|X|\*]+)?` +
+	`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
+	`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?`
+
+func isX(x string) bool {
+	switch x {
+	case "x", "*", "X":
+		return true
+	default:
+		return false
+	}
+}
+
+func rewriteRange(i string) string {
+	m := constraintRangeRegex.FindAllStringSubmatch(i, -1)
+	if m == nil {
+		return i
+	}
+	o := i
+	for _, v := range m {
+		t := fmt.Sprintf(">= %s, <= %s", v[1], v[11])
+		o = strings.Replace(o, v[0], t, 1)
+	}
+
+	return o
+}

vendor/github.com/Masterminds/semver/doc.go

@@ -0,0 +1,115 @@
+/*
+Package semver provides the ability to work with Semantic Versions (http://semver.org) in Go.
+
+Specifically it provides the ability to:
+
+    * Parse semantic versions
+    * Sort semantic versions
+    * Check if a semantic version fits within a set of constraints
+    * Optionally work with a `v` prefix
+
+Parsing Semantic Versions
+
+To parse a semantic version use the `NewVersion` function. For example,
+
+    v, err := semver.NewVersion("1.2.3-beta.1+build345")
+
+If there is an error the version wasn't parseable. The version object has methods
+to get the parts of the version, compare it to other versions, convert the
+version back into a string, and get the original string. For more details
+please see the documentation at https://godoc.org/github.com/Masterminds/semver.
+
+Sorting Semantic Versions
+
+A set of versions can be sorted using the `sort` package from the standard library.
+For example,
+
+    raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
+    vs := make([]*semver.Version, len(raw))
+	for i, r := range raw {
+		v, err := semver.NewVersion(r)
+		if err != nil {
+			t.Errorf("Error parsing version: %s", err)
+		}
+
+		vs[i] = v
+	}
+
+	sort.Sort(semver.Collection(vs))
+
+Checking Version Constraints
+
+Checking a version against version constraints is one of the most featureful
+parts of the package.
+
+    c, err := semver.NewConstraint(">= 1.2.3")
+    if err != nil {
+        // Handle constraint not being parseable.
+    }
+
+    v, err := semver.NewVersion("1.3")
+    if err != nil {
+        // Handle version not being parseable.
+    }
+    // Check if the version meets the constraints. The a variable will be true.
+    a := c.Check(v)
+
+Basic Comparisons
+
+There are two elements to the comparisons. First, a comparison string is a list
+of comma separated and comparisons. These are then separated by || separated or
+comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
+comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
+greater than or equal to 4.2.3.
+
+The basic comparisons are:
+
+    * `=`: equal (aliased to no operator)
+    * `!=`: not equal
+    * `>`: greater than
+    * `<`: less than
+    * `>=`: greater than or equal to
+    * `<=`: less than or equal to
+
+Hyphen Range Comparisons
+
+There are multiple methods to handle ranges and the first is hyphens ranges.
+These look like:
+
+    * `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
+    * `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
+
+Wildcards In Comparisons
+
+The `x`, `X`, and `*` characters can be used as a wildcard character. This works
+for all comparison operators. When used on the `=` operator it falls
+back to the pack level comparison (see tilde below). For example,
+
+    * `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
+    * `>= 1.2.x` is equivalent to `>= 1.2.0`
+    * `<= 2.x` is equivalent to `<= 3`
+    * `*` is equivalent to `>= 0.0.0`
+
+Tilde Range Comparisons (Patch)
+
+The tilde (`~`) comparison operator is for patch level ranges when a minor
+version is specified and major level changes when the minor number is missing.
+For example,
+
+    * `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
+    * `~1` is equivalent to `>= 1, < 2`
+    * `~2.3` is equivalent to `>= 2.3, < 2.4`
+    * `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
+    * `~1.x` is equivalent to `>= 1, < 2`
+
+Caret Range Comparisons (Major)
+
+The caret (`^`) comparison operator is for major level changes. This is useful
+when comparisons of API versions as a major change is API breaking. For example,
+
+    * `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
+    * `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
+    * `^2.3` is equivalent to `>= 2.3, < 3`
+    * `^2.x` is equivalent to `>= 2.0.0, < 3`
+*/
+package semver

vendor/github.com/Masterminds/semver/version.go

@@ -0,0 +1,425 @@
+package semver
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// The compiled version of the regex created at init() is cached here so it
+// only needs to be created once.
+var versionRegex *regexp.Regexp
+var validPrereleaseRegex *regexp.Regexp
+
+var (
+	// ErrInvalidSemVer is returned a version is found to be invalid when
+	// being parsed.
+	ErrInvalidSemVer = errors.New("Invalid Semantic Version")
+
+	// ErrInvalidMetadata is returned when the metadata is an invalid format
+	ErrInvalidMetadata = errors.New("Invalid Metadata string")
+
+	// ErrInvalidPrerelease is returned when the pre-release is an invalid format
+	ErrInvalidPrerelease = errors.New("Invalid Prerelease string")
+)
+
+// SemVerRegex is the regular expression used to parse a semantic version.
+const SemVerRegex string = `v?([0-9]+)(\.[0-9]+)?(\.[0-9]+)?` +
+	`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
+	`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?`
+
+// ValidPrerelease is the regular expression which validates
+// both prerelease and metadata values.
+const ValidPrerelease string = `^([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*)$`
+
+// Version represents a single semantic version.
+type Version struct {
+	major, minor, patch int64
+	pre                 string
+	metadata            string
+	original            string
+}
+
+func init() {
+	versionRegex = regexp.MustCompile("^" + SemVerRegex + "$")
+	validPrereleaseRegex = regexp.MustCompile(ValidPrerelease)
+}
+
+// NewVersion parses a given version and returns an instance of Version or
+// an error if unable to parse the version.
+func NewVersion(v string) (*Version, error) {
+	m := versionRegex.FindStringSubmatch(v)
+	if m == nil {
+		return nil, ErrInvalidSemVer
+	}
+
+	sv := &Version{
+		metadata: m[8],
+		pre:      m[5],
+		original: v,
+	}
+
+	var temp int64
+	temp, err := strconv.ParseInt(m[1], 10, 64)
+	if err != nil {
+		return nil, fmt.Errorf("Error parsing version segment: %s", err)
+	}
+	sv.major = temp
+
+	if m[2] != "" {
+		temp, err = strconv.ParseInt(strings.TrimPrefix(m[2], "."), 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("Error parsing version segment: %s", err)
+		}
+		sv.minor = temp
+	} else {
+		sv.minor = 0
+	}
+
+	if m[3] != "" {
+		temp, err = strconv.ParseInt(strings.TrimPrefix(m[3], "."), 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("Error parsing version segment: %s", err)
+		}
+		sv.patch = temp
+	} else {
+		sv.patch = 0
+	}
+
+	return sv, nil
+}
+
+// MustParse parses a given version and panics on error.
+func MustParse(v string) *Version {
+	sv, err := NewVersion(v)
+	if err != nil {
+		panic(err)
+	}
+	return sv
+}
+
+// String converts a Version object to a string.
+// Note, if the original version contained a leading v this version will not.
+// See the Original() method to retrieve the original value. Semantic Versions
+// don't contain a leading v per the spec. Instead it's optional on
+// implementation.
+func (v *Version) String() string {
+	var buf bytes.Buffer
+
+	fmt.Fprintf(&buf, "%d.%d.%d", v.major, v.minor, v.patch)
+	if v.pre != "" {
+		fmt.Fprintf(&buf, "-%s", v.pre)
+	}
+	if v.metadata != "" {
+		fmt.Fprintf(&buf, "+%s", v.metadata)
+	}
+
+	return buf.String()
+}
+
+// Original returns the original value passed in to be parsed.
+func (v *Version) Original() string {
+	return v.original
+}
+
+// Major returns the major version.
+func (v *Version) Major() int64 {
+	return v.major
+}
+
+// Minor returns the minor version.
+func (v *Version) Minor() int64 {
+	return v.minor
+}
+
+// Patch returns the patch version.
+func (v *Version) Patch() int64 {
+	return v.patch
+}
+
+// Prerelease returns the pre-release version.
+func (v *Version) Prerelease() string {
+	return v.pre
+}
+
+// Metadata returns the metadata on the version.
+func (v *Version) Metadata() string {
+	return v.metadata
+}
+
+// originalVPrefix returns the original 'v' prefix if any.
+func (v *Version) originalVPrefix() string {
+
+	// Note, only lowercase v is supported as a prefix by the parser.
+	if v.original != "" && v.original[:1] == "v" {
+		return v.original[:1]
+	}
+	return ""
+}
+
+// IncPatch produces the next patch version.
+// If the current version does not have prerelease/metadata information,
+// it unsets metadata and prerelease values, increments patch number.
+// If the current version has any of prerelease or metadata information,
+// it unsets both values and keeps curent patch value
+func (v Version) IncPatch() Version {
+	vNext := v
+	// according to http://semver.org/#spec-item-9
+	// Pre-release versions have a lower precedence than the associated normal version.
+	// according to http://semver.org/#spec-item-10
+	// Build metadata SHOULD be ignored when determining version precedence.
+	if v.pre != "" {
+		vNext.metadata = ""
+		vNext.pre = ""
+	} else {
+		vNext.metadata = ""
+		vNext.pre = ""
+		vNext.patch = v.patch + 1
+	}
+	vNext.original = v.originalVPrefix() + "" + vNext.String()
+	return vNext
+}
+
+// IncMinor produces the next minor version.
+// Sets patch to 0.
+// Increments minor number.
+// Unsets metadata.
+// Unsets prerelease status.
+func (v Version) IncMinor() Version {
+	vNext := v
+	vNext.metadata = ""
+	vNext.pre = ""
+	vNext.patch = 0
+	vNext.minor = v.minor + 1
+	vNext.original = v.originalVPrefix() + "" + vNext.String()
+	return vNext
+}
+
+// IncMajor produces the next major version.
+// Sets patch to 0.
+// Sets minor to 0.
+// Increments major number.
+// Unsets metadata.
+// Unsets prerelease status.
+func (v Version) IncMajor() Version {
+	vNext := v
+	vNext.metadata = ""
+	vNext.pre = ""
+	vNext.patch = 0
+	vNext.minor = 0
+	vNext.major = v.major + 1
+	vNext.original = v.originalVPrefix() + "" + vNext.String()
+	return vNext
+}
+
+// SetPrerelease defines the prerelease value.
+// Value must not include the required 'hypen' prefix.
+func (v Version) SetPrerelease(prerelease string) (Version, error) {
+	vNext := v
+	if len(prerelease) > 0 && !validPrereleaseRegex.MatchString(prerelease) {
+		return vNext, ErrInvalidPrerelease
+	}
+	vNext.pre = prerelease
+	vNext.original = v.originalVPrefix() + "" + vNext.String()
+	return vNext, nil
+}
+
+// SetMetadata defines metadata value.
+// Value must not include the required 'plus' prefix.
+func (v Version) SetMetadata(metadata string) (Version, error) {
+	vNext := v
+	if len(metadata) > 0 && !validPrereleaseRegex.MatchString(metadata) {
+		return vNext, ErrInvalidMetadata
+	}
+	vNext.metadata = metadata
+	vNext.original = v.originalVPrefix() + "" + vNext.String()
+	return vNext, nil
+}
+
+// LessThan tests if one version is less than another one.
+func (v *Version) LessThan(o *Version) bool {
+	return v.Compare(o) < 0
+}
+
+// GreaterThan tests if one version is greater than another one.
+func (v *Version) GreaterThan(o *Version) bool {
+	return v.Compare(o) > 0
+}
+
+// Equal tests if two versions are equal to each other.
+// Note, versions can be equal with different metadata since metadata
+// is not considered part of the comparable version.
+func (v *Version) Equal(o *Version) bool {
+	return v.Compare(o) == 0
+}
+
+// Compare compares this version to another one. It returns -1, 0, or 1 if
+// the version smaller, equal, or larger than the other version.
+//
+// Versions are compared by X.Y.Z. Build metadata is ignored. Prerelease is
+// lower than the version without a prerelease.
+func (v *Version) Compare(o *Version) int {
+	// Compare the major, minor, and patch version for differences. If a
+	// difference is found return the comparison.
+	if d := compareSegment(v.Major(), o.Major()); d != 0 {
+		return d
+	}
+	if d := compareSegment(v.Minor(), o.Minor()); d != 0 {
+		return d
+	}
+	if d := compareSegment(v.Patch(), o.Patch()); d != 0 {
+		return d
+	}
+
+	// At this point the major, minor, and patch versions are the same.
+	ps := v.pre
+	po := o.Prerelease()
+
+	if ps == "" && po == "" {
+		return 0
+	}
+	if ps == "" {
+		return 1
+	}
+	if po == "" {
+		return -1
+	}
+
+	return comparePrerelease(ps, po)
+}
+
+// UnmarshalJSON implements JSON.Unmarshaler interface.
+func (v *Version) UnmarshalJSON(b []byte) error {
+	var s string
+	if err := json.Unmarshal(b, &s); err != nil {
+		return err
+	}
+	temp, err := NewVersion(s)
+	if err != nil {
+		return err
+	}
+	v.major = temp.major
+	v.minor = temp.minor
+	v.patch = temp.patch
+	v.pre = temp.pre
+	v.metadata = temp.metadata
+	v.original = temp.original
+	temp = nil
+	return nil
+}
+
+// MarshalJSON implements JSON.Marshaler interface.
+func (v *Version) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.String())
+}
+
+func compareSegment(v, o int64) int {
+	if v < o {
+		return -1
+	}
+	if v > o {
+		return 1
+	}
+
+	return 0
+}
+
+func comparePrerelease(v, o string) int {
+
+	// split the prelease versions by their part. The separator, per the spec,
+	// is a .
+	sparts := strings.Split(v, ".")
+	oparts := strings.Split(o, ".")
+
+	// Find the longer length of the parts to know how many loop iterations to
+	// go through.
+	slen := len(sparts)
+	olen := len(oparts)
+
+	l := slen
+	if olen > slen {
+		l = olen
+	}
+
+	// Iterate over each part of the prereleases to compare the differences.
+	for i := 0; i < l; i++ {
+		// Since the lentgh of the parts can be different we need to create
+		// a placeholder. This is to avoid out of bounds issues.
+		stemp := ""
+		if i < slen {
+			stemp = sparts[i]
+		}
+
+		otemp := ""
+		if i < olen {
+			otemp = oparts[i]
+		}
+
+		d := comparePrePart(stemp, otemp)
+		if d != 0 {
+			return d
+		}
+	}
+
+	// Reaching here means two versions are of equal value but have different
+	// metadata (the part following a +). They are not identical in string form
+	// but the version comparison finds them to be equal.
+	return 0
+}
+
+func comparePrePart(s, o string) int {
+	// Fastpath if they are equal
+	if s == o {
+		return 0
+	}
+
+	// When s or o are empty we can use the other in an attempt to determine
+	// the response.
+	if s == "" {
+		if o != "" {
+			return -1
+		}
+		return 1
+	}
+
+	if o == "" {
+		if s != "" {
+			return 1
+		}
+		return -1
+	}
+
+	// When comparing strings "99" is greater than "103". To handle
+	// cases like this we need to detect numbers and compare them. According
+	// to the semver spec, numbers are always positive. If there is a - at the
+	// start like -99 this is to be evaluated as an alphanum. numbers always
+	// have precedence over alphanum. Parsing as Uints because negative numbers
+	// are ignored.
+
+	oi, n1 := strconv.ParseUint(o, 10, 64)
+	si, n2 := strconv.ParseUint(s, 10, 64)
+
+	// The case where both are strings compare the strings
+	if n1 != nil && n2 != nil {
+		if s > o {
+			return 1
+		}
+		return -1
+	} else if n1 != nil {
+		// o is a string and s is a number
+		return -1
+	} else if n2 != nil {
+		// s is a string and o is a number
+		return 1
+	}
+	// Both are numbers
+	if si > oi {
+		return 1
+	}
+	return -1
+
+}

vendor/github.com/Masterminds/semver/version_fuzz.go

@@ -0,0 +1,10 @@
+// +build gofuzz
+
+package semver
+
+func Fuzz(data []byte) int {
+	if _, err := NewVersion(string(data)); err != nil {
+		return 0
+	}
+	return 1
+}

vendor/github.com/bombsimon/wsl/v3/wsl.go

@@ -398,6 +398,18 @@ func (p *Processor) parseBlockStatements(statements []ast.Stmt) {
 			if !cuddledWithLastStmt {
 				checkingErr := atLeastOneInListsMatch(rightAndLeftHandSide, p.config.ErrorVariableNames)
 				if checkingErr {
+					// We only want to enforce cuddling error checks if the
+					// error was assigned on the line above. See
+					// https://github.com/bombsimon/wsl/issues/78.
+					// This is needed since `assignedOnLineAbove` is not
+					// actually just assignments but everything from LHS in the
+					// previous statement. This means that if previous line was
+					// `if err ...`, `err` will now be in the list
+					// `assignedOnLineAbove`.
+					if _, ok := previousStatement.(*ast.AssignStmt); !ok {
+						continue
+					}
+
 					if checkingErrInitializedInline() {
 						continue
 					}

vendor/github.com/daixiang0/gci/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2020, Xiang Dai
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/daixiang0/gci/pkg/gci/gci.go

@@ -0,0 +1,366 @@
+package gci
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+const (
+	// pkg type: standard, remote, local
+	standard int = iota
+	// 3rd-party packages
+	remote
+	local
+
+	commentFlag = "//"
+)
+
+var (
+	importStartFlag = []byte(`
+import (
+`)
+
+	importEndFlag = []byte(`
+)
+`)
+)
+
+type FlagSet struct {
+	LocalFlag       string
+	DoWrite, DoDiff *bool
+}
+
+type pkg struct {
+	list    map[int][]string
+	comment map[string]string
+	alias   map[string]string
+}
+
+func newPkg(data [][]byte, localFlag string) *pkg {
+	listMap := make(map[int][]string)
+	commentMap := make(map[string]string)
+	aliasMap := make(map[string]string)
+	p := &pkg{
+		list:    listMap,
+		comment: commentMap,
+		alias:   aliasMap,
+	}
+
+	formatData := make([]string, 0)
+	// remove all empty lines
+	for _, v := range data {
+		if len(v) > 0 {
+			formatData = append(formatData, strings.TrimSpace(string(v)))
+		}
+	}
+
+	n := len(formatData)
+	for i := n - 1; i >= 0; i-- {
+		line := formatData[i]
+
+		// check commentFlag:
+		// 1. one line commentFlag
+		// 2. commentFlag after import path
+		commentIndex := strings.Index(line, commentFlag)
+		if commentIndex == 0 {
+			// comment in the last line is useless, ignore it
+			if i+1 >= n {
+				continue
+			}
+			pkg, _, _ := getPkgInfo(formatData[i+1], strings.Index(formatData[i+1], commentFlag) >= 0)
+			p.comment[pkg] = line
+			continue
+		} else if commentIndex > 0 {
+			pkg, alias, comment := getPkgInfo(line, true)
+			if alias != "" {
+				p.alias[pkg] = alias
+			}
+
+			p.comment[pkg] = comment
+			pkgType := getPkgType(pkg, localFlag)
+			p.list[pkgType] = append(p.list[pkgType], pkg)
+			continue
+		}
+
+		pkg, alias, _ := getPkgInfo(line, false)
+
+		if alias != "" {
+			p.alias[pkg] = alias
+		}
+
+		pkgType := getPkgType(pkg, localFlag)
+		p.list[pkgType] = append(p.list[pkgType], pkg)
+	}
+
+	return p
+}
+
+// fmt format import pkgs as expected
+func (p *pkg) fmt() []byte {
+	ret := make([]string, 0, 100)
+
+	for pkgType := range []int{standard, remote, local} {
+		sort.Strings(p.list[pkgType])
+		for _, s := range p.list[pkgType] {
+			if p.comment[s] != "" {
+				l := fmt.Sprintf("%s%s%s%s", linebreak, indent, p.comment[s], linebreak)
+				ret = append(ret, l)
+			}
+
+			if p.alias[s] != "" {
+				s = fmt.Sprintf("%s%s%s%s%s", indent, p.alias[s], blank, s, linebreak)
+			} else {
+				s = fmt.Sprintf("%s%s%s", indent, s, linebreak)
+			}
+
+			ret = append(ret, s)
+		}
+
+		if len(p.list[pkgType]) > 0 {
+			ret = append(ret, linebreak)
+		}
+	}
+	if ret[len(ret)-1] == linebreak {
+		ret = ret[:len(ret)-1]
+	}
+
+	// remove duplicate empty lines
+	s1 := fmt.Sprintf("%s%s%s%s", linebreak, linebreak, linebreak, indent)
+	s2 := fmt.Sprintf("%s%s%s", linebreak, linebreak, indent)
+	return []byte(strings.ReplaceAll(strings.Join(ret, ""), s1, s2))
+}
+
+// getPkgInfo assume line is a import path, and return (path, alias, comment)
+func getPkgInfo(line string, comment bool) (string, string, string) {
+	if comment {
+		s := strings.Split(line, commentFlag)
+		pkgArray := strings.Split(s[0], blank)
+		if len(pkgArray) > 1 {
+			return pkgArray[1], pkgArray[0], fmt.Sprintf("%s%s%s", commentFlag, blank, strings.TrimSpace(s[1]))
+		} else {
+			return strings.TrimSpace(pkgArray[0]), "", fmt.Sprintf("%s%s%s", commentFlag, blank, strings.TrimSpace(s[1]))
+		}
+	} else {
+		pkgArray := strings.Split(line, blank)
+		if len(pkgArray) > 1 {
+			return pkgArray[1], pkgArray[0], ""
+		} else {
+			return pkgArray[0], "", ""
+		}
+	}
+}
+
+func getPkgType(line, localFlag string) int {
+	if !strings.Contains(line, dot) {
+		return standard
+	} else if strings.Contains(line, localFlag) {
+		return local
+	} else {
+		return remote
+	}
+}
+
+const (
+	dot       = "."
+	blank     = " "
+	indent    = "\t"
+	linebreak = "\n"
+)
+
+func diff(b1, b2 []byte, filename string) (data []byte, err error) {
+	f1, err := writeTempFile("", "gci", b1)
+	if err != nil {
+		return
+	}
+	defer os.Remove(f1)
+
+	f2, err := writeTempFile("", "gci", b2)
+	if err != nil {
+		return
+	}
+	defer os.Remove(f2)
+
+	cmd := "diff"
+
+	data, err = exec.Command(cmd, "-u", f1, f2).CombinedOutput()
+	if len(data) > 0 {
+		// diff exits with a non-zero status when the files don't match.
+		// Ignore that failure as long as we get output.
+		return replaceTempFilename(data, filename)
+	}
+	return
+}
+
+func writeTempFile(dir, prefix string, data []byte) (string, error) {
+	file, err := ioutil.TempFile(dir, prefix)
+	if err != nil {
+		return "", err
+	}
+	_, err = file.Write(data)
+	if err1 := file.Close(); err == nil {
+		err = err1
+	}
+	if err != nil {
+		os.Remove(file.Name())
+		return "", err
+	}
+	return file.Name(), nil
+}
+
+// replaceTempFilename replaces temporary filenames in diff with actual one.
+//
+// --- /tmp/gofmt316145376	2017-02-03 19:13:00.280468375 -0500
+// +++ /tmp/gofmt617882815	2017-02-03 19:13:00.280468375 -0500
+// ...
+// ->
+// --- path/to/file.go.orig	2017-02-03 19:13:00.280468375 -0500
+// +++ path/to/file.go	2017-02-03 19:13:00.280468375 -0500
+// ...
+func replaceTempFilename(diff []byte, filename string) ([]byte, error) {
+	bs := bytes.SplitN(diff, []byte{'\n'}, 3)
+	if len(bs) < 3 {
+		return nil, fmt.Errorf("got unexpected diff for %s", filename)
+	}
+	// Preserve timestamps.
+	var t0, t1 []byte
+	if i := bytes.LastIndexByte(bs[0], '\t'); i != -1 {
+		t0 = bs[0][i:]
+	}
+	if i := bytes.LastIndexByte(bs[1], '\t'); i != -1 {
+		t1 = bs[1][i:]
+	}
+	// Always print filepath with slash separator.
+	f := filepath.ToSlash(filename)
+	bs[0] = []byte(fmt.Sprintf("--- %s%s", f+".orig", t0))
+	bs[1] = []byte(fmt.Sprintf("+++ %s%s", f, t1))
+	return bytes.Join(bs, []byte{'\n'}), nil
+}
+
+func visitFile(set *FlagSet) filepath.WalkFunc {
+	return func(path string, f os.FileInfo, err error) error {
+		if err == nil && isGoFile(f) {
+			err = processFile(path, os.Stdout, set)
+		}
+		return err
+	}
+}
+
+func WalkDir(path string, set *FlagSet) error {
+	return filepath.Walk(path, visitFile(set))
+}
+
+func isGoFile(f os.FileInfo) bool {
+	// ignore non-Go files
+	name := f.Name()
+	return !f.IsDir() && !strings.HasPrefix(name, ".") && strings.HasSuffix(name, ".go")
+}
+
+func ProcessFile(filename string, out io.Writer, set *FlagSet) error {
+	return processFile(filename, out, set)
+}
+
+func processFile(filename string, out io.Writer, set *FlagSet) error {
+	var err error
+
+	f, err := os.Open(filename)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	src, err := ioutil.ReadAll(f)
+	if err != nil {
+		return err
+	}
+
+	ori := make([]byte, len(src))
+	copy(ori, src)
+	start := bytes.Index(src, importStartFlag)
+	// in case no importStartFlag or importStartFlag exist in the commentFlag
+	if start < 0 {
+		fmt.Printf("skip file %s since no import\n", filename)
+		return nil
+	}
+	end := bytes.Index(src[start:], importEndFlag) + start
+
+	ret := bytes.Split(src[start+len(importStartFlag):end], []byte(linebreak))
+
+	p := newPkg(ret, set.LocalFlag)
+
+	res := append(src[:start+len(importStartFlag)], append(p.fmt(), src[end+1:]...)...)
+
+	if !bytes.Equal(ori, res) {
+		if *set.DoWrite {
+			// On Windows, we need to re-set the permissions from the file. See golang/go#38225.
+			var perms os.FileMode
+			if fi, err := os.Stat(filename); err == nil {
+				perms = fi.Mode() & os.ModePerm
+			}
+			err = ioutil.WriteFile(filename, res, perms)
+			if err != nil {
+				return err
+			}
+		}
+		if *set.DoDiff {
+			data, err := diff(ori, res, filename)
+			if err != nil {
+				return fmt.Errorf("failed to diff: %v", err)
+			}
+			fmt.Printf("diff -u %s %s\n", filepath.ToSlash(filename+".orig"), filepath.ToSlash(filename))
+			if _, err := out.Write(data); err != nil {
+				return fmt.Errorf("failed to write: %v", err)
+			}
+		}
+	}
+	if !*set.DoWrite && !*set.DoDiff {
+		if _, err = out.Write(res); err != nil {
+			return fmt.Errorf("failed to write: %v", err)
+		}
+	}
+
+	return err
+}
+
+// Run return source and result in []byte if succeed
+func Run(filename string, set *FlagSet) ([]byte, []byte, error) {
+	var err error
+
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer f.Close()
+
+	src, err := ioutil.ReadAll(f)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	ori := make([]byte, len(src))
+	copy(ori, src)
+	start := bytes.Index(src, importStartFlag)
+	// in case no importStartFlag or importStartFlag exist in the commentFlag
+	if start < 0 {
+		return nil, nil, nil
+	}
+	end := bytes.Index(src[start:], importEndFlag) + start
+
+	ret := bytes.Split(src[start+len(importStartFlag):end], []byte(linebreak))
+
+	p := newPkg(ret, set.LocalFlag)
+
+	res := append(src[:start+len(importStartFlag)], append(p.fmt(), src[end+1:]...)...)
+
+	if bytes.Equal(ori, res) {
+		return ori, nil, nil
+	}
+
+	return ori, res, nil
+}

vendor/github.com/denis-tingajkin/go-header/.gitignore

@@ -0,0 +1 @@
+.idea/

vendor/github.com/denis-tingajkin/go-header/LICENSE

@@ -0,0 +1,674 @@
+   GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

vendor/github.com/denis-tingajkin/go-header/README.md

@@ -0,0 +1,69 @@
+# go-header
+[![Actions Status](https://github.com/denis-tingajkin/go-header/workflows/ci/badge.svg)](https://github.com/denis-tingajkin/go-header/actions)
+
+Go source code linter providing checks for license headers.
+
+# Installation
+
+For installation you can simply use `go get`.
+
+```
+go get github.com/denis-tingajkin/go-header/cmd/go-header
+```
+
+# Configuration
+
+To configuring `go-header.yml` linter you simply need to fill the next structures in YAML format.
+```go
+// Configuration represents go-header linter setup parameters
+type Configuration struct {
+	// Values is map of values. Supports two types 'const` and `regexp`. Values can be used recursively.
+	Values       map[string]map[string]string `yaml:"values"'`
+	// Template is template for checking. Uses values.
+	Template     string                       `yaml:"template"`
+	// TemplatePath path to the template file. Useful if need to load the template from a specific file.
+	TemplatePath string                       `yaml:"template-path"`
+}
+```
+Where supported two kinds of values: `const` and `regexp`. NOTE: values can be used recursively. 
+Values ​​with type `const` checks on equality.
+Values ​​with type `regexp` checks on the match.
+
+# Execution
+
+`go-header` linter expects file path on input. If you want to run `go-header` only on diff files, then you can use this command
+```bash
+go-header $(git diff --name-only)
+```
+
+# Setup example
+
+## Step 1
+Create configuration file  `.go-header.yaml` in the root of project.
+```yaml
+---
+values:
+  const:
+    MY COMPANY: mycompany.com
+template-path: ./mypath/mytemplate.txt
+```
+## Step 2 
+Write the template file. For example for config above `mytemplate.txt` could be
+```text
+{{ MY COMPANY }}
+SPDX-License-Identifier: Apache-2.0
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at:
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+```
+## Step 3 
+You are ready! Execute `go-header {FILES}` from the root of the project. 

vendor/github.com/denis-tingajkin/go-header/analyzer.go

@@ -0,0 +1,98 @@
+package goheader
+
+import (
+	"fmt"
+	"go/ast"
+	"strings"
+)
+
+type Analyzer interface {
+	Analyze(file *ast.File) Issue
+}
+
+type analyzer struct {
+	values   map[string]Value
+	template string
+}
+
+func (a *analyzer) Analyze(file *ast.File) Issue {
+	if a.template == "" {
+		return NewIssue("Missed template for check")
+	}
+	var header string
+	if len(file.Comments) > 0 && file.Comments[0].Pos() < file.Package {
+		if strings.HasPrefix(file.Comments[0].List[0].Text, "/*") {
+			header = (&ast.CommentGroup{List: []*ast.Comment{file.Comments[0].List[0]}}).Text()
+		} else {
+			header = file.Comments[0].Text()
+		}
+	}
+	header = strings.TrimSpace(header)
+	if header == "" {
+		return NewIssue("Missed header for check")
+	}
+	s := NewReader(header)
+	t := NewReader(a.template)
+	for !s.Done() && !t.Done() {
+		templateCh := t.Peek()
+		if templateCh == '{' {
+			name := a.readField(t)
+			if a.values[name] == nil {
+				return NewIssue(fmt.Sprintf("Template has unknown value: %v", name))
+			}
+			if i := a.values[name].Read(s); i != nil {
+				return i
+			}
+			continue
+		}
+		sourceCh := s.Peek()
+		if sourceCh != templateCh {
+			l := s.Location()
+			notNextLine := func(r rune) bool {
+				return r != '\n'
+			}
+			actual := s.ReadWhile(notNextLine)
+			expected := t.ReadWhile(notNextLine)
+			return NewIssueWithLocation(fmt.Sprintf("Actual: %v\nExpected:%v", actual, expected), l)
+		}
+		s.Next()
+		t.Next()
+	}
+	if !s.Done() {
+		l := s.Location()
+		return NewIssueWithLocation(fmt.Sprintf("Unexpected string: %v", s.Finish()), l)
+	}
+	if !t.Done() {
+		l := s.Location()
+		return NewIssueWithLocation(fmt.Sprintf("Missed string: %v", t.Finish()), l)
+	}
+	return nil
+}
+
+func (a *analyzer) readField(reader Reader) string {
+	_ = reader.Next()
+	_ = reader.Next()
+
+	r := reader.ReadWhile(func(r rune) bool {
+		return r != '}'
+	})
+
+	_ = reader.Next()
+	_ = reader.Next()
+
+	return strings.ToLower(strings.TrimSpace(r))
+}
+
+func New(options ...AnalyzerOption) Analyzer {
+	a := &analyzer{}
+	for _, o := range options {
+		o.apply(a)
+	}
+	for _, v := range a.values {
+		err := v.Calculate(a.values)
+		if err != nil {
+			panic(err.Error())
+		}
+	}
+	return a
+}

vendor/github.com/denis-tingajkin/go-header/config.go

@@ -0,0 +1,69 @@
+package goheader
+
+import (
+	"errors"
+	"fmt"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"strings"
+)
+
+// Configuration represents go-header linter setup parameters
+type Configuration struct {
+	// Values is map of values. Supports two types 'const` and `regexp`. Values can be used recursively.
+	Values map[string]map[string]string `yaml:"values"'`
+	// Template is template for checking. Uses values.
+	Template string `yaml:"template"`
+	// TemplatePath path to the template file. Useful if need to load the template from a specific file.
+	TemplatePath string `yaml:"template-path"`
+}
+
+func (c *Configuration) GetValues() (map[string]Value, error) {
+	var result = make(map[string]Value)
+	createConst := func(raw string) Value {
+		return &ConstValue{RawValue: raw}
+	}
+	createRegexp := func(raw string) Value {
+		return &RegexpValue{RawValue: raw}
+	}
+	appendValues := func(m map[string]string, create func(string) Value) {
+		for k, v := range m {
+			key := strings.ToLower(k)
+			result[key] = create(v)
+		}
+	}
+	for k, v := range c.Values {
+		switch k {
+		case "const":
+			appendValues(v, createConst)
+		case "regexp":
+			appendValues(v, createRegexp)
+		default:
+			return nil, fmt.Errorf("unknown value type %v", k)
+		}
+	}
+	return result, nil
+}
+
+func (c *Configuration) GetTemplate() (string, error) {
+	if c.Template != "" {
+		return c.Template, nil
+	}
+	if c.TemplatePath == "" {
+		return "", errors.New("template has not passed")
+	}
+	if b, err := ioutil.ReadFile(c.TemplatePath); err != nil {
+		return "", err
+	} else {
+		c.Template = string(b)
+		return c.Template, nil
+	}
+}
+
+func (c *Configuration) Parse(p string) error {
+	b, err := ioutil.ReadFile(p)
+	if err != nil {
+		return err
+	}
+	return yaml.Unmarshal(b, c)
+}

vendor/github.com/denis-tingajkin/go-header/go.mod

@@ -0,0 +1,10 @@
+module github.com/denis-tingajkin/go-header
+
+go 1.13
+
+require (
+	github.com/fatih/color v1.9.0
+	github.com/sirupsen/logrus v1.6.0
+	github.com/stretchr/testify v1.5.1
+	gopkg.in/yaml.v2 v2.2.2
+)

vendor/github.com/denis-tingajkin/go-header/go.sum

@@ -0,0 +1,31 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
+github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
+github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8=
+github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/mattn/go-colorable v0.1.4 h1:snbPLB8fVfU9iwbbo30TPtbLRzwWu6aJS6Xh4eaaviA=
+github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
+github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/mattn/go-isatty v0.0.11 h1:FxPOTFNqGkuDUGi3H/qkUbQO4ZiBa2brKq5r0l8TGeM=
+github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I=
+github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
+github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

vendor/github.com/denis-tingajkin/go-header/issue.go

@@ -0,0 +1,32 @@
+package goheader
+
+type Issue interface {
+	Location() Location
+	Message() string
+}
+
+type issue struct {
+	msg      string
+	location Location
+}
+
+func (i *issue) Location() Location {
+	return i.location
+}
+
+func (i *issue) Message() string {
+	return i.msg
+}
+
+func NewIssueWithLocation(msg string, location Location) Issue {
+	return &issue{
+		msg:      msg,
+		location: location,
+	}
+}
+
+func NewIssue(msg string) Issue {
+	return &issue{
+		msg: msg,
+	}
+}

vendor/github.com/denis-tingajkin/go-header/location.go

@@ -0,0 +1,12 @@
+package goheader
+
+import "fmt"
+
+type Location struct {
+	Line     int
+	Position int
+}
+
+func (l Location) String() string {
+	return fmt.Sprintf("%v:%v", l.Line+1, l.Position)
+}

vendor/github.com/denis-tingajkin/go-header/option.go

@@ -0,0 +1,28 @@
+package goheader
+
+import "strings"
+
+type AnalyzerOption interface {
+	apply(*analyzer)
+}
+
+type applyAnalyzerOptionFunc func(*analyzer)
+
+func (f applyAnalyzerOptionFunc) apply(a *analyzer) {
+	f(a)
+}
+
+func WithValues(values map[string]Value) AnalyzerOption {
+	return applyAnalyzerOptionFunc(func(a *analyzer) {
+		a.values = make(map[string]Value)
+		for k, v := range values {
+			a.values[strings.ToLower(k)] = v
+		}
+	})
+}
+
+func WithTemplate(template string) AnalyzerOption {
+	return applyAnalyzerOptionFunc(func(a *analyzer) {
+		a.template = template
+	})
+}

vendor/github.com/denis-tingajkin/go-header/reader.go

@@ -0,0 +1,105 @@
+package goheader
+
+type Reader interface {
+	Peek() rune
+	Next() rune
+	Done() bool
+	Finish() string
+	Position() int
+	Location() Location
+	SetPosition(int)
+	ReadWhile(func(rune) bool) string
+}
+
+func NewReader(text string) Reader {
+	return &reader{source: text}
+}
+
+type reader struct {
+	source   string
+	position int
+	location Location
+}
+
+func (r *reader) Position() int {
+	return r.position
+}
+
+func (r *reader) Location() Location {
+	return r.location
+}
+
+func (r *reader) Peek() rune {
+	if r.Done() {
+		return rune(0)
+	}
+	return rune(r.source[r.position])
+}
+
+func (r *reader) Done() bool {
+	return r.position >= len(r.source)
+}
+
+func (r *reader) Next() rune {
+	if r.Done() {
+		return rune(0)
+	}
+	reuslt := r.Peek()
+	if reuslt == '\n' {
+		r.location.Line++
+		r.location.Position = 0
+	} else {
+		r.location.Position++
+	}
+	r.position++
+	return reuslt
+}
+
+func (r *reader) Finish() string {
+	if r.position >= len(r.source) {
+		return ""
+	}
+	defer r.till()
+	return r.source[r.position:]
+}
+
+func (r *reader) SetPosition(pos int) {
+	if pos < 0 {
+		r.position = 0
+	}
+	r.position = pos
+	r.location = r.calculateLocation()
+}
+
+func (r *reader) ReadWhile(match func(rune) bool) string {
+	if match == nil {
+		return ""
+	}
+	start := r.position
+	for !r.Done() && match(r.Peek()) {
+		r.Next()
+	}
+	return r.source[start:r.position]
+}
+
+func (r *reader) till() {
+	r.position = len(r.source)
+	r.location = r.calculateLocation()
+}
+
+func (r *reader) calculateLocation() Location {
+	min := len(r.source)
+	if min > r.position {
+		min = r.position
+	}
+	x, y := 0, 0
+	for i := 0; i < min; i++ {
+		if r.source[i] == '\n' {
+			y++
+			x = 0
+		} else {
+			x++
+		}
+	}
+	return Location{Line: y, Position: x}
+}

vendor/github.com/denis-tingajkin/go-header/value.go

@@ -0,0 +1,112 @@
+package goheader
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+type Calculable interface {
+	Calculate(map[string]Value) error
+	Get() string
+}
+
+type Value interface {
+	Calculable
+	Read(Reader) Issue
+}
+
+func calculateValue(calculable Calculable, values map[string]Value) (string, error) {
+	sb := strings.Builder{}
+	r := calculable.Get()
+	var endIndex int
+	var startIndex int
+	for startIndex = strings.Index(r, "{{"); startIndex >= 0; startIndex = strings.Index(r, "{{") {
+		_, _ = sb.WriteString(r[:startIndex])
+		endIndex = strings.Index(r, "}}")
+		if endIndex < 0 {
+			return "", errors.New("missed value ending")
+		}
+		subVal := strings.ToLower(strings.TrimSpace(r[startIndex+2 : endIndex]))
+		if val := values[subVal]; val != nil {
+			if err := val.Calculate(values); err != nil {
+				return "", err
+			}
+			sb.WriteString(val.Get())
+		} else {
+			return "", fmt.Errorf("unknown value name %v", subVal)
+		}
+		endIndex += 2
+		r = r[endIndex:]
+	}
+	_, _ = sb.WriteString(r)
+	return sb.String(), nil
+}
+
+type ConstValue struct {
+	RawValue string
+}
+
+func (c *ConstValue) Calculate(values map[string]Value) error {
+	v, err := calculateValue(c, values)
+	if err != nil {
+		return err
+	}
+	c.RawValue = v
+	return nil
+}
+
+func (c *ConstValue) Get() string {
+	return c.RawValue
+}
+
+func (c *ConstValue) Read(s Reader) Issue {
+	l := s.Location()
+	p := s.Position()
+	for _, ch := range c.Get() {
+		if ch != s.Peek() {
+			s.SetPosition(p)
+			f := s.ReadWhile(func(r rune) bool {
+				return r != '\n'
+			})
+			return NewIssueWithLocation(fmt.Sprintf("Expected:%v, Actual: %v", c.Get(), f), l)
+		}
+		s.Next()
+	}
+	return nil
+}
+
+type RegexpValue struct {
+	RawValue string
+}
+
+func (r *RegexpValue) Calculate(values map[string]Value) error {
+	v, err := calculateValue(r, values)
+	if err != nil {
+		return err
+	}
+	r.RawValue = v
+	return nil
+}
+
+func (r *RegexpValue) Get() string {
+	return r.RawValue
+}
+
+func (r *RegexpValue) Read(s Reader) Issue {
+	l := s.Location()
+	p := regexp.MustCompile(r.Get())
+	pos := s.Position()
+	str := s.Finish()
+	s.SetPosition(pos)
+	indexes := p.FindAllIndex([]byte(str), -1)
+	if len(indexes) == 0 {
+		return NewIssueWithLocation(fmt.Sprintf("Pattern %v doesn't match.", p.String()), l)
+	}
+	s.SetPosition(pos + indexes[0][1])
+	return nil
+}
+
+var _ Value = &ConstValue{}
+var _ Value = &RegexpValue{}

vendor/github.com/fatih/color/.travis.yml

@@ -1,5 +0,0 @@
-language: go
-go: 
- - 1.8.x
- - tip
-

vendor/github.com/fatih/color/Gopkg.lock

@@ -1,27 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  name = "github.com/mattn/go-colorable"
-  packages = ["."]
-  revision = "167de6bfdfba052fa6b2d3664c8f5272e23c9072"
-  version = "v0.0.9"
-
-[[projects]]
-  name = "github.com/mattn/go-isatty"
-  packages = ["."]
-  revision = "0360b2af4f38e8d38c7fce2a9f4e702702d73a39"
-  version = "v0.0.3"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/sys"
-  packages = ["unix"]
-  revision = "37707fdb30a5b38865cfb95e5aab41707daec7fd"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  inputs-digest = "e8a50671c3cb93ea935bf210b1cd20702876b9d9226129be581ef646d1565cdc"
-  solver-name = "gps-cdcl"
-  solver-version = 1

vendor/github.com/fatih/color/Gopkg.toml

@@ -1,30 +0,0 @@
-
-# Gopkg.toml example
-#
-# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#  name = "github.com/x/y"
-#  version = "2.4.0"
-
-
-[[constraint]]
-  name = "github.com/mattn/go-colorable"
-  version = "0.0.9"
-
-[[constraint]]
-  name = "github.com/mattn/go-isatty"
-  version = "0.0.3"

vendor/github.com/fatih/color/README.md

@@ -1,6 +1,12 @@
-# Color [![GoDoc](https://godoc.org/github.com/fatih/color?status.svg)](https://godoc.org/github.com/fatih/color) [![Build Status](https://img.shields.io/travis/fatih/color.svg?style=flat-square)](https://travis-ci.org/fatih/color)
+# Archived project. No maintenance. 
+
+This project is not maintained anymore and is archived. Feel free to fork and
+make your own changes if needed. For more detail read my blog post: [Taking an indefinite sabbatical from my projects](https://arslan.io/2018/10/09/taking-an-indefinite-sabbatical-from-my-projects/)
+
+Thanks to everyone for their valuable feedback and contributions.
 
 
+# Color [![GoDoc](https://godoc.org/github.com/fatih/color?status.svg)](https://godoc.org/github.com/fatih/color) 
 
 Color lets you use colorized outputs in terms of [ANSI Escape
 Codes](http://en.wikipedia.org/wiki/ANSI_escape_code#Colors) in Go (Golang). It
@@ -17,9 +23,6 @@ suits you.
 go get github.com/fatih/color
 ```
 
-Note that the `vendor` folder is here for stability. Remove the folder if you
-already have the dependencies in your GOPATH.
-
 ## Examples
 
 ### Standard colors

vendor/github.com/fatih/color/go.mod

@@ -0,0 +1,8 @@
+module github.com/fatih/color
+
+go 1.13
+
+require (
+	github.com/mattn/go-colorable v0.1.4
+	github.com/mattn/go-isatty v0.0.11
+)

vendor/github.com/fatih/color/go.sum

@@ -0,0 +1,8 @@
+github.com/mattn/go-colorable v0.1.4 h1:snbPLB8fVfU9iwbbo30TPtbLRzwWu6aJS6Xh4eaaviA=
+github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
+github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/mattn/go-isatty v0.0.11 h1:FxPOTFNqGkuDUGi3H/qkUbQO4ZiBa2brKq5r0l8TGeM=
+github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

vendor/github.com/fsnotify/fsnotify/.editorconfig

@@ -1,5 +1,12 @@
 root = true
 
-[*]
+[*.go]
 indent_style = tab
 indent_size = 4
+insert_final_newline = true
+
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true

vendor/github.com/fsnotify/fsnotify/.gitattributes

@@ -0,0 +1 @@
+go.sum linguist-generated

vendor/github.com/fsnotify/fsnotify/.travis.yml

@@ -2,29 +2,35 @@ sudo: false
 language: go
 
 go:
-  - 1.8.x
-  - 1.9.x
-  - tip
+  - "stable"
+  - "1.11.x"
+  - "1.10.x"
+  - "1.9.x"
 
 matrix:
+  include:
+    - go: "stable"
+      env: GOLINT=true
   allow_failures:
     - go: tip
   fast_finish: true
 
-before_script:
-  - go get -u github.com/golang/lint/golint
+
+before_install:
+  - if [ ! -z "${GOLINT}" ]; then go get -u golang.org/x/lint/golint; fi
 
 script:
-  - go test -v --race ./...
+  - go test --race ./...
 
 after_script:
   - test -z "$(gofmt -s -l -w . | tee /dev/stderr)"
-  - test -z "$(golint ./...     | tee /dev/stderr)"
+  - if [ ! -z  "${GOLINT}" ]; then echo running golint; golint --set_exit_status  ./...; else echo skipping golint; fi
   - go vet ./...
 
 os:
   - linux
   - osx
+  - windows
 
 notifications:
   email: false

vendor/github.com/fsnotify/fsnotify/LICENSE

@@ -1,5 +1,5 @@
 Copyright (c) 2012 The Go Authors. All rights reserved.
-Copyright (c) 2012 fsnotify Authors. All rights reserved.
+Copyright (c) 2012-2019 fsnotify Authors. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are

vendor/github.com/fsnotify/fsnotify/README.md

@@ -10,16 +10,16 @@ go get -u golang.org/x/sys/...
 
 Cross platform: Windows, Linux, BSD and macOS.
 
-|Adapter   |OS        |Status    |
-|----------|----------|----------|
-|inotify   |Linux 2.6.27 or later, Android\*|Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify)|
-|kqueue    |BSD, macOS, iOS\*|Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify)|
-|ReadDirectoryChangesW|Windows|Supported [![Build status](https://ci.appveyor.com/api/projects/status/ivwjubaih4r0udeh/branch/master?svg=true)](https://ci.appveyor.com/project/NathanYoungman/fsnotify/branch/master)|
-|FSEvents  |macOS         |[Planned](https://github.com/fsnotify/fsnotify/issues/11)|
-|FEN       |Solaris 11    |[In Progress](https://github.com/fsnotify/fsnotify/issues/12)|
-|fanotify  |Linux 2.6.37+ | |
-|USN Journals |Windows    |[Maybe](https://github.com/fsnotify/fsnotify/issues/53)|
-|Polling   |*All*         |[Maybe](https://github.com/fsnotify/fsnotify/issues/9)|
+| Adapter               | OS                               | Status                                                                                                                          |
+| --------------------- | -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
+| inotify               | Linux 2.6.27 or later, Android\* | Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify) |
+| kqueue                | BSD, macOS, iOS\*                | Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify) |
+| ReadDirectoryChangesW | Windows                          | Supported [![Build Status](https://travis-ci.org/fsnotify/fsnotify.svg?branch=master)](https://travis-ci.org/fsnotify/fsnotify) |
+| FSEvents              | macOS                            | [Planned](https://github.com/fsnotify/fsnotify/issues/11)                                                                       |
+| FEN                   | Solaris 11                       | [In Progress](https://github.com/fsnotify/fsnotify/issues/12)                                                                   |
+| fanotify              | Linux 2.6.37+                    | [Planned](https://github.com/fsnotify/fsnotify/issues/114)                                                                      |
+| USN Journals          | Windows                          | [Maybe](https://github.com/fsnotify/fsnotify/issues/53)                                                                         |
+| Polling               | *All*                            | [Maybe](https://github.com/fsnotify/fsnotify/issues/9)                                                                          |
 
 \* Android and iOS are untested.
 
@@ -33,6 +33,53 @@ All [releases](https://github.com/fsnotify/fsnotify/releases) are tagged based o
 
 Go 1.6 supports dependencies located in the `vendor/` folder. Unless you are creating a library, it is recommended that you copy fsnotify into `vendor/github.com/fsnotify/fsnotify` within your project, and likewise for `golang.org/x/sys`.
 
+## Usage
+
+```go
+package main
+
+import (
+	"log"
+
+	"github.com/fsnotify/fsnotify"
+)
+
+func main() {
+	watcher, err := fsnotify.NewWatcher()
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer watcher.Close()
+
+	done := make(chan bool)
+	go func() {
+		for {
+			select {
+			case event, ok := <-watcher.Events:
+				if !ok {
+					return
+				}
+				log.Println("event:", event)
+				if event.Op&fsnotify.Write == fsnotify.Write {
+					log.Println("modified file:", event.Name)
+				}
+			case err, ok := <-watcher.Errors:
+				if !ok {
+					return
+				}
+				log.Println("error:", err)
+			}
+		}
+	}()
+
+	err = watcher.Add("/tmp/foo")
+	if err != nil {
+		log.Fatal(err)
+	}
+	<-done
+}
+```
+
 ## Contributing
 
 Please refer to [CONTRIBUTING][] before opening an issue or pull request.
@@ -65,6 +112,10 @@ There are OS-specific limits as to how many watches can be created:
 * Linux: /proc/sys/fs/inotify/max_user_watches contains the limit, reaching this limit results in a "no space left on device" error.
 * BSD / OSX: sysctl variables "kern.maxfiles" and "kern.maxfilesperproc", reaching these limits results in a "too many open files" error.
 
+**Why don't notifications work with NFS filesystems or filesystem in userspace (FUSE)?**
+
+fsnotify requires support from underlying OS to work. The current NFS protocol does not provide network level support for file notifications.
+
 [#62]: https://github.com/howeyc/fsnotify/issues/62
 [#18]: https://github.com/fsnotify/fsnotify/issues/18
 [#11]: https://github.com/fsnotify/fsnotify/issues/11

vendor/github.com/fsnotify/fsnotify/fsnotify.go

@@ -63,4 +63,6 @@ func (e Event) String() string {
 }
 
 // Common errors that can be reported by a watcher
-var ErrEventOverflow = errors.New("fsnotify queue overflow")
+var (
+	ErrEventOverflow = errors.New("fsnotify queue overflow")
+)

vendor/github.com/fsnotify/fsnotify/go.mod

@@ -0,0 +1,5 @@
+module github.com/fsnotify/fsnotify
+
+go 1.13
+
+require golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9

vendor/github.com/fsnotify/fsnotify/go.sum

@@ -0,0 +1,2 @@
+golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9 h1:L2auWcuQIvxz9xSEqzESnV/QN/gNRXNApHi3fYwl2w0=
+golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

vendor/github.com/fsnotify/fsnotify/inotify_poller.go

@@ -40,12 +40,12 @@ func newFdPoller(fd int) (*fdPoller, error) {
 	poller.fd = fd
 
 	// Create epoll fd
-	poller.epfd, errno = unix.EpollCreate1(0)
+	poller.epfd, errno = unix.EpollCreate1(unix.EPOLL_CLOEXEC)
 	if poller.epfd == -1 {
 		return nil, errno
 	}
 	// Create pipe; pipe[0] is the read end, pipe[1] the write end.
-	errno = unix.Pipe2(poller.pipe[:], unix.O_NONBLOCK)
+	errno = unix.Pipe2(poller.pipe[:], unix.O_NONBLOCK|unix.O_CLOEXEC)
 	if errno != nil {
 		return nil, errno
 	}

vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go

@@ -8,4 +8,4 @@ package fsnotify
 
 import "golang.org/x/sys/unix"
 
-const openMode = unix.O_NONBLOCK | unix.O_RDONLY
+const openMode = unix.O_NONBLOCK | unix.O_RDONLY | unix.O_CLOEXEC

vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go

@@ -9,4 +9,4 @@ package fsnotify
 import "golang.org/x/sys/unix"
 
 // note: this constant is not defined on BSD
-const openMode = unix.O_EVTONLY
+const openMode = unix.O_EVTONLY | unix.O_CLOEXEC

vendor/github.com/go-critic/go-critic/checkers/appendAssign_checker.go

@@ -5,15 +5,15 @@ import (
 	"go/token"
 	"go/types"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astequal"
 	"github.com/go-toolsmith/astp"
 	"golang.org/x/tools/go/ast/astutil"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "appendAssign"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects suspicious append result assignments"
@@ -24,14 +24,14 @@ p.negatives = append(p.negatives, y)`
 p.positives = append(p.positives, x)
 p.negatives = append(p.negatives, y)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&appendAssignChecker{ctx: ctx})
 	})
 }
 
 type appendAssignChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *appendAssignChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/appendCombine_checker.go

@@ -4,14 +4,14 @@ import (
 	"go/ast"
 	"go/token"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astequal"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "appendCombine"
 	info.Tags = []string{"performance"}
 	info.Summary = "Detects `append` chains to the same slice that can be done in a single `append` call"
@@ -20,14 +20,14 @@ xs = append(xs, 1)
 xs = append(xs, 2)`
 	info.After = `xs = append(xs, 1, 2)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmtList(&appendCombineChecker{ctx: ctx})
 	})
 }
 
 type appendCombineChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *appendCombineChecker) VisitStmtList(list []ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/argOrder_checker.go

@@ -4,8 +4,8 @@ import (
 	"go/ast"
 	"go/types"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astcopy"
 	"github.com/go-toolsmith/astp"
@@ -13,21 +13,21 @@ import (
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "argOrder"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects suspicious arguments order"
 	info.Before = `strings.HasPrefix("#", userpass)`
 	info.After = `strings.HasPrefix(userpass, "#")`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&argOrderChecker{ctx: ctx})
 	})
 }
 
 type argOrderChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *argOrderChecker) VisitExpr(expr ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/assignOp_checker.go

@@ -4,29 +4,29 @@ import (
 	"go/ast"
 	"go/token"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcopy"
 	"github.com/go-toolsmith/astequal"
 	"github.com/go-toolsmith/typep"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "assignOp"
 	info.Tags = []string{"style"}
 	info.Summary = "Detects assignments that can be simplified by using assignment operators"
 	info.Before = `x = x * 2`
 	info.After = `x *= 2`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&assignOpChecker{ctx: ctx})
 	})
 }
 
 type assignOpChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *assignOpChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/badCall_checker.go

@@ -3,28 +3,28 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astcopy"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "badCall"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects suspicious function calls"
 	info.Before = `strings.Replace(s, from, to, 0)`
 	info.After = `strings.Replace(s, from, to, -1)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&badCallChecker{ctx: ctx})
 	})
 }
 
 type badCallChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *badCallChecker) VisitExpr(expr ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/badCond_checker.go

@@ -5,9 +5,9 @@ import (
 	"go/constant"
 	"go/token"
 
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
 	"github.com/go-critic/go-critic/checkers/internal/lintutil"
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astcopy"
 	"github.com/go-toolsmith/astequal"
@@ -16,9 +16,9 @@ import (
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "badCond"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects suspicious condition expressions"
 	info.Before = `
 for i := 0; i > n; i++ {
@@ -29,14 +29,14 @@ for i := 0; i < n; i++ {
 	xs[i] = 0
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForFuncDecl(&badCondChecker{ctx: ctx})
 	})
 }
 
 type badCondChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *badCondChecker) VisitFuncDecl(decl *ast.FuncDecl) {

vendor/github.com/go-critic/go-critic/checkers/badRegexp_checker.go

@@ -0,0 +1,445 @@
+package checkers
+
+import (
+	"go/ast"
+	"go/constant"
+	"sort"
+	"strconv"
+	"unicode"
+	"unicode/utf8"
+
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
+	"github.com/quasilyte/regex/syntax"
+)
+
+func init() {
+	var info linter.CheckerInfo
+	info.Name = "badRegexp"
+	info.Tags = []string{"diagnostic", "experimental"}
+	info.Summary = "Detects suspicious regexp patterns"
+	info.Before = "regexp.MustCompile(`(?:^aa|bb|cc)foo[aba]`)"
+	info.After = "regexp.MustCompile(`^(?:aa|bb|cc)foo[ab]`)"
+
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
+		opts := &syntax.ParserOptions{}
+		c := &badRegexpChecker{
+			ctx:    ctx,
+			parser: syntax.NewParser(opts),
+		}
+		return astwalk.WalkerForExpr(c)
+	})
+}
+
+type badRegexpChecker struct {
+	astwalk.WalkHandler
+	ctx *linter.CheckerContext
+
+	parser *syntax.Parser
+	cause  ast.Expr
+
+	flagStates  []regexpFlagState
+	goodAnchors []syntax.Position
+}
+
+type regexpFlagState [utf8.RuneSelf]bool
+
+func (c *badRegexpChecker) VisitExpr(x ast.Expr) {
+	call, ok := x.(*ast.CallExpr)
+	if !ok {
+		return
+	}
+
+	switch qualifiedName(call.Fun) {
+	case "regexp.Compile", "regexp.MustCompile":
+		cv := c.ctx.TypesInfo.Types[call.Args[0]].Value
+		if cv == nil || cv.Kind() != constant.String {
+			return
+		}
+		pat := constant.StringVal(cv)
+		c.cause = call.Args[0]
+		c.checkPattern(pat)
+	}
+}
+
+func (c *badRegexpChecker) checkPattern(pat string) {
+	re, err := c.parser.Parse(pat)
+	if err != nil {
+		return
+	}
+
+	c.flagStates = c.flagStates[:0]
+	c.goodAnchors = c.goodAnchors[:0]
+
+	// In Go all flags (modifiers) are set to false by default,
+	// so we start from the empty flag set.
+	c.flagStates = append(c.flagStates, regexpFlagState{})
+
+	c.markGoodCarets(re.Expr)
+	c.walk(re.Expr)
+}
+
+func (c *badRegexpChecker) markGoodCarets(e syntax.Expr) {
+	canSkip := func(e syntax.Expr) bool {
+		switch e.Op {
+		case syntax.OpFlagOnlyGroup:
+			return true
+		case syntax.OpGroup:
+			x := e.Args[0]
+			return x.Op == syntax.OpConcat && len(x.Args) == 0
+		}
+		return false
+	}
+
+	if e.Op == syntax.OpConcat && len(e.Args) > 1 {
+		i := 0
+		for i < len(e.Args) && canSkip(e.Args[i]) {
+			i++
+		}
+		if i < len(e.Args) {
+			c.markGoodCarets(e.Args[i])
+		}
+		return
+	}
+	if e.Op == syntax.OpCaret {
+		c.addGoodAnchor(e.Pos)
+	}
+	for _, a := range e.Args {
+		c.markGoodCarets(a)
+	}
+}
+
+func (c *badRegexpChecker) walk(e syntax.Expr) {
+	switch e.Op {
+	case syntax.OpAlt:
+		c.checkAltAnchor(e)
+		c.checkAltDups(e)
+		for _, a := range e.Args {
+			c.walk(a)
+		}
+
+	case syntax.OpCharClass, syntax.OpNegCharClass:
+		if c.checkCharClassRanges(e) {
+			c.checkCharClassDups(e)
+		}
+
+	case syntax.OpStar, syntax.OpPlus:
+		c.checkNestedQuantifier(e)
+		c.walk(e.Args[0])
+
+	case syntax.OpFlagOnlyGroup:
+		c.updateFlagState(c.currentFlagState(), e, e.Args[0].Value)
+	case syntax.OpGroupWithFlags:
+		// Creates a new context using the current context copy.
+		// New flags are evaluated inside a new context.
+		// After nested expressions are processed, previous context is restored.
+		nflags := len(c.flagStates)
+		c.flagStates = append(c.flagStates, *c.currentFlagState())
+		c.updateFlagState(c.currentFlagState(), e, e.Args[1].Value)
+		c.walk(e.Args[0])
+		c.flagStates = c.flagStates[:nflags]
+	case syntax.OpGroup, syntax.OpCapture, syntax.OpNamedCapture:
+		// Like with OpGroupWithFlags, but doesn't evaluate any new flags.
+		nflags := len(c.flagStates)
+		c.flagStates = append(c.flagStates, *c.currentFlagState())
+		c.walk(e.Args[0])
+		c.flagStates = c.flagStates[:nflags]
+
+	case syntax.OpCaret:
+		if !c.isGoodAnchor(e) {
+			c.warn("dangling or redundant ^, maybe \\^ is intended?")
+		}
+
+	default:
+		for _, a := range e.Args {
+			c.walk(a)
+		}
+	}
+}
+
+func (c *badRegexpChecker) currentFlagState() *regexpFlagState {
+	return &c.flagStates[len(c.flagStates)-1]
+}
+
+func (c *badRegexpChecker) updateFlagState(state *regexpFlagState, e syntax.Expr, flagString string) {
+	clearing := false
+	for i := 0; i < len(flagString); i++ {
+		ch := flagString[i]
+		if ch == '-' {
+			clearing = true
+			continue
+		}
+		if int(ch) >= len(state) {
+			continue // Should never happen in practice, but we don't want a panic
+		}
+
+		if clearing {
+			if !state[ch] {
+				c.warn("clearing unset flag %c in %s", ch, e.Value)
+			}
+		} else {
+			if state[ch] {
+				c.warn("redundant flag %c in %s", ch, e.Value)
+			}
+		}
+		state[ch] = !clearing
+	}
+}
+
+func (c *badRegexpChecker) checkNestedQuantifier(e syntax.Expr) {
+	x := e.Args[0]
+	switch x.Op {
+	case syntax.OpGroup, syntax.OpCapture, syntax.OpGroupWithFlags:
+		if len(e.Args) == 1 {
+			x = x.Args[0]
+		}
+	}
+
+	switch x.Op {
+	case syntax.OpPlus, syntax.OpStar:
+		c.warn("repeated greedy quantifier in %s", e.Value)
+	}
+}
+
+func (c *badRegexpChecker) checkAltDups(alt syntax.Expr) {
+	// Seek duplicated alternation expressions.
+
+	set := make(map[string]struct{}, len(alt.Args))
+	for _, a := range alt.Args {
+		if _, ok := set[a.Value]; ok {
+			c.warn("`%s` is duplicated in %s", a.Value, alt.Value)
+		}
+		set[a.Value] = struct{}{}
+	}
+}
+
+func (c *badRegexpChecker) isCharOrLit(e syntax.Expr) bool {
+	return e.Op == syntax.OpChar || e.Op == syntax.OpLiteral
+}
+
+func (c *badRegexpChecker) checkAltAnchor(alt syntax.Expr) {
+	// Seek suspicious anchors.
+
+	// Case 1: an alternation of literals where 1st expr begins with ^ anchor.
+	first := alt.Args[0]
+	if first.Op == syntax.OpConcat && len(first.Args) == 2 && first.Args[0].Op == syntax.OpCaret && c.isCharOrLit(first.Args[1]) {
+		matched := true
+		for _, a := range alt.Args[1:] {
+			if !c.isCharOrLit(a) {
+				matched = false
+				break
+			}
+		}
+		if matched {
+			c.warn("^ applied only to `%s` in %s", first.Value[len(`^`):], alt.Value)
+		}
+	}
+
+	// Case 2: an alternation of literals where last expr ends with $ anchor.
+	last := alt.Args[len(alt.Args)-1]
+	if last.Op == syntax.OpConcat && len(last.Args) == 2 && last.Args[1].Op == syntax.OpDollar && c.isCharOrLit(last.Args[0]) {
+		matched := true
+		for _, a := range alt.Args[:len(alt.Args)-1] {
+			if !c.isCharOrLit(a) {
+				matched = false
+				break
+			}
+		}
+		if matched {
+			c.warn("$ applied only to `%s` in %s", last.Value[:len(last.Value)-len(`$`)], alt.Value)
+		}
+	}
+}
+
+func (c *badRegexpChecker) checkCharClassRanges(cc syntax.Expr) bool {
+	// Seek for suspicious ranges like `!-_`.
+	//
+	// We permit numerical ranges (0-9, hex and octal literals)
+	// and simple ascii letter ranges.
+
+	for _, e := range cc.Args {
+		if e.Op != syntax.OpCharRange {
+			continue
+		}
+		switch e.Args[0].Op {
+		case syntax.OpEscapeOctal, syntax.OpEscapeHex:
+			continue
+		}
+		ch := c.charClassBoundRune(e.Args[0])
+		if ch == 0 {
+			return false
+		}
+		good := unicode.IsLetter(ch) || (ch >= '0' && ch <= '9')
+		if !good {
+			c.warnSloppyCharRange(e.Value, cc.Value)
+		}
+	}
+
+	return true
+}
+
+func (c *badRegexpChecker) checkCharClassDups(cc syntax.Expr) {
+	// Seek for excessive elements inside a character class.
+	// Report them as intersections.
+
+	if len(cc.Args) == 1 {
+		return // Can't had duplicates.
+	}
+
+	type charRange struct {
+		low    rune
+		high   rune
+		source string
+	}
+	ranges := make([]charRange, 0, 8)
+	addRange := func(source string, low, high rune) {
+		ranges = append(ranges, charRange{source: source, low: low, high: high})
+	}
+	addRange1 := func(source string, ch rune) {
+		addRange(source, ch, ch)
+	}
+
+	// 1. Collect ranges, O(n).
+	for _, e := range cc.Args {
+		switch e.Op {
+		case syntax.OpEscapeOctal:
+			addRange1(e.Value, c.octalToRune(e))
+		case syntax.OpEscapeHex:
+			addRange1(e.Value, c.hexToRune(e))
+		case syntax.OpChar:
+			addRange1(e.Value, c.stringToRune(e.Value))
+		case syntax.OpCharRange:
+			addRange(e.Value, c.charClassBoundRune(e.Args[0]), c.charClassBoundRune(e.Args[1]))
+		case syntax.OpEscapeMeta:
+			addRange1(e.Value, rune(e.Value[1]))
+		case syntax.OpEscapeChar:
+			ch := c.stringToRune(e.Value[len(`\`):])
+			if unicode.IsPunct(ch) {
+				addRange1(e.Value, ch)
+				break
+			}
+			switch e.Value {
+			case `\|`, `\<`, `\>`, `\+`, `\=`: // How to cover all symbols?
+				addRange1(e.Value, c.stringToRune(e.Value[len(`\`):]))
+			case `\t`:
+				addRange1(e.Value, '\t')
+			case `\n`:
+				addRange1(e.Value, '\n')
+			case `\r`:
+				addRange1(e.Value, '\r')
+			case `\v`:
+				addRange1(e.Value, '\v')
+			case `\d`:
+				addRange(e.Value, '0', '9')
+			case `\D`:
+				addRange(e.Value, 0, '0'-1)
+				addRange(e.Value, '9'+1, utf8.MaxRune)
+			case `\s`:
+				addRange(e.Value, '\t', '\n') // 9-10
+				addRange(e.Value, '\f', '\r') // 12-13
+				addRange1(e.Value, ' ')       // 32
+			case `\S`:
+				addRange(e.Value, 0, '\t'-1)
+				addRange(e.Value, '\n'+1, '\f'-1)
+				addRange(e.Value, '\r'+1, ' '-1)
+				addRange(e.Value, ' '+1, utf8.MaxRune)
+			case `\w`:
+				addRange(e.Value, '0', '9') // 48-57
+				addRange(e.Value, 'A', 'Z') // 65-90
+				addRange1(e.Value, '_')     // 95
+				addRange(e.Value, 'a', 'z') // 97-122
+			case `\W`:
+				addRange(e.Value, 0, '0'-1)
+				addRange(e.Value, '9'+1, 'A'-1)
+				addRange(e.Value, 'Z'+1, '_'-1)
+				addRange(e.Value, '_'+1, 'a'-1)
+				addRange(e.Value, 'z'+1, utf8.MaxRune)
+			default:
+				// Give up: unknown escape sequence.
+				return
+			}
+		default:
+			// Give up: unexpected operation inside char class.
+			return
+		}
+	}
+
+	// 2. Sort ranges, O(nlogn).
+	sort.Slice(ranges, func(i, j int) bool {
+		return ranges[i].low < ranges[j].low
+	})
+
+	// 3. Search for duplicates, O(n).
+	for i := 0; i < len(ranges)-1; i++ {
+		x := ranges[i+0]
+		y := ranges[i+1]
+		if x.high >= y.low {
+			c.warnCharClassDup(x.source, y.source, cc.Value)
+			break
+		}
+	}
+}
+
+func (c *badRegexpChecker) charClassBoundRune(e syntax.Expr) rune {
+	switch e.Op {
+	case syntax.OpChar:
+		return c.stringToRune(e.Value)
+	case syntax.OpEscapeHex:
+		return c.hexToRune(e)
+	case syntax.OpEscapeOctal:
+		return c.octalToRune(e)
+	default:
+		return 0
+	}
+}
+
+func (c *badRegexpChecker) octalToRune(e syntax.Expr) rune {
+	v, _ := strconv.ParseInt(e.Value[len(`\`):], 8, 32)
+	return rune(v)
+}
+
+func (c *badRegexpChecker) hexToRune(e syntax.Expr) rune {
+	var s string
+	switch e.Form {
+	case syntax.FormEscapeHexFull:
+		s = e.Value[len(`\x{`) : len(e.Value)-len(`}`)]
+	default:
+		s = e.Value[len(`\x`):]
+	}
+	v, _ := strconv.ParseInt(s, 16, 32)
+	return rune(v)
+}
+
+func (c *badRegexpChecker) stringToRune(s string) rune {
+	ch, _ := utf8.DecodeRuneInString(s)
+	return ch
+}
+
+func (c *badRegexpChecker) addGoodAnchor(pos syntax.Position) {
+	c.goodAnchors = append(c.goodAnchors, pos)
+}
+
+func (c *badRegexpChecker) isGoodAnchor(e syntax.Expr) bool {
+	for _, pos := range c.goodAnchors {
+		if e.Pos == pos {
+			return true
+		}
+	}
+	return false
+}
+
+func (c *badRegexpChecker) warn(format string, args ...interface{}) {
+	c.ctx.Warn(c.cause, format, args...)
+}
+
+func (c *badRegexpChecker) warnSloppyCharRange(rng, charClass string) {
+	c.ctx.Warn(c.cause, "suspicious char range `%s` in %s", rng, charClass)
+}
+
+func (c *badRegexpChecker) warnCharClassDup(x, y, charClass string) {
+	if x == y {
+		c.ctx.Warn(c.cause, "`%s` is duplicated in %s", x, charClass)
+	} else {
+		c.ctx.Warn(c.cause, "`%s` intersects with `%s` in %s", x, y, charClass)
+	}
+}

vendor/github.com/go-critic/go-critic/checkers/boolExprSimplify_checker.go

@@ -6,9 +6,9 @@ import (
 	"go/token"
 	"strconv"
 
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
 	"github.com/go-critic/go-critic/checkers/internal/lintutil"
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astcopy"
 	"github.com/go-toolsmith/astequal"
@@ -18,7 +18,7 @@ import (
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "boolExprSimplify"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects bool expressions that can be simplified"
@@ -29,14 +29,14 @@ b := !(x) == !(y)`
 a := elapsed < expectElapsedMin
 b := (x) == (y)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&boolExprSimplifyChecker{ctx: ctx})
 	})
 }
 
 type boolExprSimplifyChecker struct {
 	astwalk.WalkHandler
-	ctx       *lintpack.CheckerContext
+	ctx       *linter.CheckerContext
 	hasFloats bool
 }
 

vendor/github.com/go-critic/go-critic/checkers/builtinShadow_checker.go

@@ -3,26 +3,26 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "builtinShadow"
 	info.Tags = []string{"style", "opinionated"}
 	info.Summary = "Detects when predeclared identifiers shadowed in assignments"
 	info.Before = `len := 10`
 	info.After = `length := 10`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForLocalDef(&builtinShadowChecker{ctx: ctx}, ctx.TypesInfo)
 	})
 }
 
 type builtinShadowChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *builtinShadowChecker) VisitLocalDef(name astwalk.Name, _ ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/captLocal_checker.go

@@ -3,15 +3,15 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "captLocal"
 	info.Tags = []string{"style"}
-	info.Params = lintpack.CheckerParams{
+	info.Params = linter.CheckerParams{
 		"paramsOnly": {
 			Value: true,
 			Usage: "whether to restrict checker to params only",
@@ -21,7 +21,7 @@ func init() {
 	info.Before = `func f(IN int, OUT *int) (ERR error) {}`
 	info.After = `func f(in int, out *int) (err error) {}`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		c := &captLocalChecker{ctx: ctx}
 		c.paramsOnly = info.Params.Bool("paramsOnly")
 		return astwalk.WalkerForLocalDef(c, ctx.TypesInfo)
@@ -30,7 +30,7 @@ func init() {
 
 type captLocalChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	paramsOnly bool
 }

vendor/github.com/go-critic/go-critic/checkers/caseOrder_checker.go

@@ -4,12 +4,12 @@ import (
 	"go/ast"
 	"go/types"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "caseOrder"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects erroneous case order inside switch statements"
@@ -28,14 +28,14 @@ case ast.Expr:
 	fmt.Println("expr")
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&caseOrderChecker{ctx: ctx})
 	})
 }
 
 type caseOrderChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *caseOrderChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/checkers.go

@@ -2,9 +2,18 @@
 package checkers
 
 import (
-	"github.com/go-lintpack/lintpack"
+	"os"
+
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
-var collection = &lintpack.CheckerCollection{
+var collection = &linter.CheckerCollection{
 	URL: "https://github.com/go-critic/go-critic/checkers",
 }
+
+var debug = func() func() bool {
+	v := os.Getenv("DEBUG") != ""
+	return func() bool {
+		return v
+	}
+}()

vendor/github.com/go-critic/go-critic/checkers/codegenComment_checker.go

@@ -5,19 +5,19 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "codegenComment"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects malformed 'code generated' file comments"
 	info.Before = `// This file was automatically generated by foogen`
 	info.After = `// Code generated by foogen. DO NOT EDIT.`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		patterns := []string{
 			"this (?:file|code) (?:was|is) auto(?:matically)? generated",
 			"this (?:file|code) (?:was|is) generated automatically",
@@ -38,7 +38,7 @@ func init() {
 
 type codegenCommentChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	badCommentRE *regexp.Regexp
 }

vendor/github.com/go-critic/go-critic/checkers/commentFormatting_checker.go

@@ -7,23 +7,25 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "commentFormatting"
-	info.Tags = []string{"style", "experimental"}
+	info.Tags = []string{"style"}
 	info.Summary = "Detects comments with non-idiomatic formatting"
 	info.Before = `//This is a comment`
 	info.After = `// This is a comment`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		parts := []string{
-			`^//\w+:.*$`,      //key: value
-			`^//nolint$`,      //nolint
-			`^//line /.*:\d+`, //line /path/to/file:123
+			`^//go:generate .*$`, // e.g.: go:generate value
+			`^//\w+:.*$`,         // e.g.: key: value
+			`^//nolint$`,         // e.g.: nolint
+			`^//line /.*:\d+`,    // e.g.: line /path/to/file:123
+			`^//export \w+$`,     // e.g.: export Foo
 		}
 		pat := "(?m)" + strings.Join(parts, "|")
 		pragmaRE := regexp.MustCompile(pat)
@@ -36,7 +38,7 @@ func init() {
 
 type commentFormattingChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	pragmaRE *regexp.Regexp
 }

vendor/github.com/go-critic/go-critic/checkers/commentedOutCode_checker.go

@@ -7,13 +7,13 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/strparse"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "commentedOutCode"
 	info.Tags = []string{"diagnostic", "experimental"}
 	info.Summary = "Detects commented-out code inside function bodies"
@@ -22,7 +22,7 @@ func init() {
 foo(1, 2)`
 	info.After = `foo(1, 2)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForLocalComment(&commentedOutCodeChecker{
 			ctx:              ctx,
 			notQuiteFuncCall: regexp.MustCompile(`\w+\s+\([^)]*\)\s*$`),
@@ -32,7 +32,7 @@ foo(1, 2)`
 
 type commentedOutCodeChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 	fn  *ast.FuncDecl
 
 	notQuiteFuncCall *regexp.Regexp

vendor/github.com/go-critic/go-critic/checkers/commentedOutImport_checker.go

@@ -5,12 +5,12 @@ import (
 	"go/token"
 	"regexp"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "commentedOutImport"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects commented-out imports"
@@ -24,7 +24,7 @@ import (
 	"fmt"
 )`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		const pattern = `(?m)^(?://|/\*)?\s*"([a-zA-Z0-9_/]+)"\s*(?:\*/)?$`
 		return &commentedOutImportChecker{
 			ctx:            ctx,
@@ -35,7 +35,7 @@ import (
 
 type commentedOutImportChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	importStringRE *regexp.Regexp
 }

vendor/github.com/go-critic/go-critic/checkers/defaultCaseOrder_checker.go

@@ -3,12 +3,12 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "defaultCaseOrder"
 	info.Tags = []string{"style"}
 	info.Summary = "Detects when default case in switch isn't on 1st or last position"
@@ -31,14 +31,14 @@ default: // <- last case (could also be the first one)
 	// ...
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&defaultCaseOrderChecker{ctx: ctx})
 	})
 }
 
 type defaultCaseOrderChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *defaultCaseOrderChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/deferUnlambda_checker.go

@@ -0,0 +1,94 @@
+package checkers
+
+import (
+	"go/ast"
+	"go/types"
+
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
+	"github.com/go-toolsmith/astcast"
+)
+
+func init() {
+	var info linter.CheckerInfo
+	info.Name = "deferUnlambda"
+	info.Tags = []string{"style", "experimental"}
+	info.Summary = "Detects deferred function literals that can be simplified"
+	info.Before = `defer func() { f() }()`
+	info.After = `f()`
+
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
+		return astwalk.WalkerForStmt(&deferUnlambdaChecker{ctx: ctx})
+	})
+}
+
+type deferUnlambdaChecker struct {
+	astwalk.WalkHandler
+	ctx *linter.CheckerContext
+}
+
+func (c *deferUnlambdaChecker) VisitStmt(x ast.Stmt) {
+	def, ok := x.(*ast.DeferStmt)
+	if !ok {
+		return
+	}
+
+	// We don't analyze deferred function args.
+	// Most deferred calls don't have them, so it's not a big deal to skip them.
+	if len(def.Call.Args) != 0 {
+		return
+	}
+
+	fn, ok := def.Call.Fun.(*ast.FuncLit)
+	if !ok {
+		return
+	}
+
+	if len(fn.Body.List) != 1 {
+		return
+	}
+
+	call, ok := astcast.ToExprStmt(fn.Body.List[0]).X.(*ast.CallExpr)
+	if !ok || !c.isFunctionCall(call) {
+		return
+	}
+
+	// Skip recover() as it can't be moved outside of the lambda.
+	// Skip panic() to avoid affecting the stack trace.
+	switch qualifiedName(call.Fun) {
+	case "recover", "panic":
+		return
+	}
+
+	for _, arg := range call.Args {
+		if !c.isConstExpr(arg) {
+			return
+		}
+	}
+
+	c.warn(def, call)
+}
+
+func (c *deferUnlambdaChecker) isFunctionCall(e *ast.CallExpr) bool {
+	switch fnExpr := e.Fun.(type) {
+	case *ast.Ident:
+		return true
+	case *ast.SelectorExpr:
+		x, ok := fnExpr.X.(*ast.Ident)
+		if !ok {
+			return false
+		}
+		_, ok = c.ctx.TypesInfo.ObjectOf(x).(*types.PkgName)
+		return ok
+	default:
+		return false
+	}
+}
+
+func (c *deferUnlambdaChecker) isConstExpr(e ast.Expr) bool {
+	return c.ctx.TypesInfo.Types[e].Value != nil
+}
+
+func (c *deferUnlambdaChecker) warn(cause, suggestion ast.Node) {
+	c.ctx.Warn(cause, "can rewrite as `defer %s`", suggestion)
+}

vendor/github.com/go-critic/go-critic/checkers/deprecatedComment_checker.go

@@ -5,14 +5,14 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "deprecatedComment"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects malformed 'deprecated' doc-comments"
 	info.Before = `
 // deprecated, use FuncNew instead
@@ -21,7 +21,7 @@ func FuncOld() int`
 // Deprecated: use FuncNew instead
 func FuncOld() int`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		c := &deprecatedCommentChecker{ctx: ctx}
 
 		c.commonPatterns = []*regexp.Regexp{
@@ -61,7 +61,7 @@ func FuncOld() int`
 
 type deprecatedCommentChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	commonPatterns []*regexp.Regexp
 	commonTypos    []string

vendor/github.com/go-critic/go-critic/checkers/docStub_checker.go

@@ -6,12 +6,12 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "docStub"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects comments that silence go lint complaints about doc-comment"
@@ -26,7 +26,7 @@ func Foo() {}
 // Foo is a demonstration-only function.
 func Foo() {}`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		re := `(?i)^\.\.\.$|^\.$|^xxx\.?$|^whatever\.?$`
 		c := &docStubChecker{
 			ctx:           ctx,
@@ -38,7 +38,7 @@ func Foo() {}`
 
 type docStubChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	stubCommentRE *regexp.Regexp
 }

vendor/github.com/go-critic/go-critic/checkers/dupArg_checker.go

@@ -4,21 +4,21 @@ import (
 	"go/ast"
 	"go/types"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astequal"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "dupArg"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects suspicious duplicated arguments"
 	info.Before = `copy(dst, dst)`
 	info.After = `copy(dst, src)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		c := &dupArgChecker{ctx: ctx}
 		// newMatcherFunc returns a function that matches a call if
 		// args[xIndex] and args[yIndex] are equal.
@@ -101,7 +101,7 @@ func init() {
 
 type dupArgChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	matchers map[string]func(*ast.CallExpr) bool
 }

vendor/github.com/go-critic/go-critic/checkers/dupBranchBody_checker.go

@@ -3,13 +3,13 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astequal"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "dupBranchBody"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects duplicated branch bodies inside conditional statements"
@@ -26,14 +26,14 @@ if cond {
 	println("cond=false")
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&dupBranchBodyChecker{ctx: ctx})
 	})
 }
 
 type dupBranchBodyChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *dupBranchBodyChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/dupCase_checker.go

@@ -3,13 +3,13 @@ package checkers
 import (
 	"go/ast"
 
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
 	"github.com/go-critic/go-critic/checkers/internal/lintutil"
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "dupCase"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects duplicated case clauses inside switch statements"
@@ -22,14 +22,14 @@ switch x {
 case ys[0], ys[1], ys[2], ys[3], ys[4]:
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&dupCaseChecker{ctx: ctx})
 	})
 }
 
 type dupCaseChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	astSet lintutil.AstSet
 }

vendor/github.com/go-critic/go-critic/checkers/dupImports_checker.go

@@ -4,11 +4,11 @@ import (
 	"fmt"
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "dupImport"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects multiple imports of the same package under different aliases"
@@ -22,13 +22,13 @@ import(
 	"fmt"
 )`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return &dupImportChecker{ctx: ctx}
 	})
 }
 
 type dupImportChecker struct {
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *dupImportChecker) WalkFile(f *ast.File) {

vendor/github.com/go-critic/go-critic/checkers/dupSubExpr_checker.go

@@ -5,14 +5,14 @@ import (
 	"go/token"
 	"go/types"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astequal"
 	"github.com/go-toolsmith/typep"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "dupSubExpr"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects suspicious duplicated sub-expressions"
@@ -25,7 +25,7 @@ sort.Slice(xs, func(i, j int) bool {
 	return xs[i].v < xs[j].v
 })`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		c := &dupSubExprChecker{ctx: ctx}
 
 		ops := []struct {
@@ -65,7 +65,7 @@ sort.Slice(xs, func(i, j int) bool {
 
 type dupSubExprChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	// opSet is a set of binary operations that do not make
 	// sense with duplicated (same) RHS and LHS.

vendor/github.com/go-critic/go-critic/checkers/elseif_checker.go

@@ -3,16 +3,16 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astp"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "elseif"
 	info.Tags = []string{"style"}
-	info.Params = lintpack.CheckerParams{
+	info.Params = linter.CheckerParams{
 		"skipBalanced": {
 			Value: true,
 			Usage: "whether to skip balanced if-else pairs",
@@ -30,7 +30,7 @@ if cond1 {
 } else if x := cond2; x {
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		c := &elseifChecker{ctx: ctx}
 		c.skipBalanced = info.Params.Bool("skipBalanced")
 		return astwalk.WalkerForStmt(c)
@@ -39,7 +39,7 @@ if cond1 {
 
 type elseifChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	skipBalanced bool
 }

vendor/github.com/go-critic/go-critic/checkers/emptyFallthrough_checker.go

@@ -4,12 +4,12 @@ import (
 	"go/ast"
 	"go/token"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "emptyFallthrough"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects fallthrough that can be avoided by using multi case values"
@@ -24,14 +24,14 @@ case reflect.Int, reflect.Int32:
 	return Int
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&emptyFallthroughChecker{ctx: ctx})
 	})
 }
 
 type emptyFallthroughChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *emptyFallthroughChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/emptyStringTest_checker.go

@@ -4,15 +4,15 @@ import (
 	"go/ast"
 	"go/token"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astcopy"
 	"github.com/go-toolsmith/typep"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "emptyStringTest"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects empty string checks that can be written more idiomatically"
@@ -20,14 +20,14 @@ func init() {
 	info.After = `s == ""`
 	info.Note = "See https://dmitri.shuralyov.com/idiomatic-go#empty-string-check."
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&emptyStringTestChecker{ctx: ctx})
 	})
 }
 
 type emptyStringTestChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *emptyStringTestChecker) VisitExpr(e ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/equalFold_checker.go

@@ -4,28 +4,28 @@ import (
 	"go/ast"
 	"go/token"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astequal"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "equalFold"
 	info.Tags = []string{"performance", "experimental"}
 	info.Summary = "Detects unoptimal strings/bytes case-insensitive comparison"
 	info.Before = `strings.ToLower(x) == strings.ToLower(y)`
 	info.After = `strings.EqualFold(x, y)`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&equalFoldChecker{ctx: ctx})
 	})
 }
 
 type equalFoldChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *equalFoldChecker) VisitExpr(e ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/evalOrder_checker.go

@@ -5,16 +5,16 @@ import (
 	"go/token"
 	"go/types"
 
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
 	"github.com/go-critic/go-critic/checkers/internal/lintutil"
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/astequal"
 	"github.com/go-toolsmith/typep"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "evalOrder"
 	info.Tags = []string{"diagnostic", "experimental"}
 	info.Summary = "Detects unwanted dependencies on the evaluation order"
@@ -24,14 +24,14 @@ err := f(&x)
 return x, err
 `
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&evalOrderChecker{ctx: ctx})
 	})
 }
 
 type evalOrderChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *evalOrderChecker) VisitStmt(stmt ast.Stmt) {

vendor/github.com/go-critic/go-critic/checkers/exitAfterDefer_checker.go

@@ -3,17 +3,17 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astfmt"
 	"github.com/go-toolsmith/astp"
 	"golang.org/x/tools/go/ast/astutil"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "exitAfterDefer"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects calls to exit/fatal inside functions that use defer"
 	info.Before = `
 defer os.Remove(filename)
@@ -27,14 +27,14 @@ if bad {
 	return
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForFuncDecl(&exitAfterDeferChecker{ctx: ctx})
 	})
 }
 
 type exitAfterDeferChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *exitAfterDeferChecker) VisitFuncDecl(fn *ast.FuncDecl) {
@@ -66,13 +66,11 @@ func (c *exitAfterDeferChecker) VisitFuncDecl(fn *ast.FuncDecl) {
 }
 
 func (c *exitAfterDeferChecker) warn(cause *ast.CallExpr, deferStmt *ast.DeferStmt) {
-	var s string
+	s := astfmt.Sprint(deferStmt)
 	if fnlit, ok := deferStmt.Call.Fun.(*ast.FuncLit); ok {
 		// To avoid long and multi-line warning messages,
 		// collapse the function literals.
 		s = "defer " + astfmt.Sprint(fnlit.Type) + "{...}(...)"
-	} else {
-		s = astfmt.Sprint(deferStmt)
 	}
 	c.ctx.Warn(cause, "%s clutters `%s`", cause.Fun, s)
 }

vendor/github.com/go-critic/go-critic/checkers/filepathJoin_checker.go

@@ -0,0 +1,50 @@
+package checkers
+
+import (
+	"go/ast"
+	"strings"
+
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
+	"github.com/go-toolsmith/astcast"
+)
+
+func init() {
+	var info linter.CheckerInfo
+	info.Name = "filepathJoin"
+	info.Tags = []string{"diagnostic", "experimental"}
+	info.Summary = "Detects problems in filepath.Join() function calls"
+	info.Before = `filepath.Join("dir/", filename)`
+	info.After = `filepath.Join("dir", filename)`
+
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
+		return astwalk.WalkerForExpr(&filepathJoinChecker{ctx: ctx})
+	})
+}
+
+type filepathJoinChecker struct {
+	astwalk.WalkHandler
+	ctx *linter.CheckerContext
+}
+
+func (c *filepathJoinChecker) VisitExpr(expr ast.Expr) {
+	call := astcast.ToCallExpr(expr)
+	if qualifiedName(call.Fun) != "filepath.Join" {
+		return
+	}
+
+	for _, arg := range call.Args {
+		arg, ok := arg.(*ast.BasicLit)
+		if ok && c.hasSeparator(arg) {
+			c.warnSeparator(arg)
+		}
+	}
+}
+
+func (c *filepathJoinChecker) hasSeparator(v *ast.BasicLit) bool {
+	return strings.ContainsAny(v.Value, `/\`)
+}
+
+func (c *filepathJoinChecker) warnSeparator(sep ast.Expr) {
+	c.ctx.Warn(sep, "%s contains a path separator", sep)
+}

vendor/github.com/go-critic/go-critic/checkers/flagDeref_checker.go

@@ -3,12 +3,12 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "flagDeref"
 	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects immediate dereferencing of `flag` package pointers"
@@ -21,7 +21,7 @@ flag.BoolVar(&b, "b", false, "b docs")`
 Dereferencing returned pointers will lead to hard to find errors
 where flag values are not updated after flag.Parse().`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		c := &flagDerefChecker{
 			ctx: ctx,
 			flagPtrFuncs: map[string]bool{
@@ -41,7 +41,7 @@ where flag values are not updated after flag.Parse().`
 
 type flagDerefChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	flagPtrFuncs map[string]bool
 }

vendor/github.com/go-critic/go-critic/checkers/flagName_checker.go

@@ -6,27 +6,27 @@ import (
 	"go/types"
 	"strings"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "flagName"
-	info.Tags = []string{"diagnostic", "experimental"}
+	info.Tags = []string{"diagnostic"}
 	info.Summary = "Detects flag names with whitespace"
 	info.Before = `b := flag.Bool(" foo ", false, "description")`
 	info.After = `b := flag.Bool("foo", false, "description")`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&flagNameChecker{ctx: ctx})
 	})
 }
 
 type flagNameChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *flagNameChecker) VisitExpr(expr ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/hexLiteral_checker.go

@@ -5,13 +5,13 @@ import (
 	"go/token"
 	"strings"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "hexLiteral"
 	info.Tags = []string{"style", "experimental"}
 	info.Summary = "Detects hex literals that have mixed case letter digits"
@@ -25,14 +25,14 @@ y := 0xff
 // (B)
 y := 0xFF`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&hexLiteralChecker{ctx: ctx})
 	})
 }
 
 type hexLiteralChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *hexLiteralChecker) warn0X(lit *ast.BasicLit) {

vendor/github.com/go-critic/go-critic/checkers/hugeParam_checker.go

@@ -3,15 +3,15 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "hugeParam"
 	info.Tags = []string{"performance"}
-	info.Params = lintpack.CheckerParams{
+	info.Params = linter.CheckerParams{
 		"sizeThreshold": {
 			Value: 80,
 			Usage: "size in bytes that makes the warning trigger",
@@ -21,7 +21,7 @@ func init() {
 	info.Before = `func f(x [1024]int) {}`
 	info.After = `func f(x *[1024]int) {}`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForFuncDecl(&hugeParamChecker{
 			ctx:           ctx,
 			sizeThreshold: int64(info.Params.Int("sizeThreshold")),
@@ -31,7 +31,7 @@ func init() {
 
 type hugeParamChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	sizeThreshold int64
 }

vendor/github.com/go-critic/go-critic/checkers/ifElseChain_checker.go

@@ -3,12 +3,12 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "ifElseChain"
 	info.Tags = []string{"style"}
 	info.Summary = "Detects repeated if-else statements and suggests to replace them with switch statement"
@@ -34,14 +34,14 @@ Permits single else or else-if; repeated else-if or else + else-if
 will trigger suggestion to use switch statement.
 See [EffectiveGo#switch](https://golang.org/doc/effective_go.html#switch).`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&ifElseChainChecker{ctx: ctx})
 	})
 }
 
 type ifElseChainChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 
 	cause   *ast.IfStmt
 	visited map[*ast.IfStmt]bool

vendor/github.com/go-critic/go-critic/checkers/importShadow_checker.go

@@ -4,12 +4,12 @@ import (
 	"go/ast"
 	"go/types"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "importShadow"
 	info.Tags = []string{"style", "opinionated"}
 	info.Summary = "Detects when imported package names shadowed in the assignments"
@@ -19,7 +19,7 @@ filepath := "foo.txt"`
 	info.After = `
 filename := "foo.txt"`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		ctx.Require.PkgObjects = true
 		return astwalk.WalkerForLocalDef(&importShadowChecker{ctx: ctx}, ctx.TypesInfo)
 	})
@@ -27,7 +27,7 @@ filename := "foo.txt"`
 
 type importShadowChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *importShadowChecker) VisitLocalDef(def astwalk.Name, _ ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/indexAlloc_checker.go

@@ -3,14 +3,14 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astcast"
 	"github.com/go-toolsmith/typep"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "indexAlloc"
 	info.Tags = []string{"performance"}
 	info.Summary = "Detects strings.Index calls that may cause unwanted allocs"
@@ -18,14 +18,14 @@ func init() {
 	info.After = `bytes.Index(x, []byte(y))`
 	info.Note = `See Go issue for details: https://github.com/golang/go/issues/25864`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForExpr(&indexAllocChecker{ctx: ctx})
 	})
 }
 
 type indexAllocChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *indexAllocChecker) VisitExpr(e ast.Expr) {

vendor/github.com/go-critic/go-critic/checkers/initClause_checker.go

@@ -3,13 +3,13 @@ package checkers
 import (
 	"go/ast"
 
-	"github.com/go-lintpack/lintpack"
-	"github.com/go-lintpack/lintpack/astwalk"
+	"github.com/go-critic/go-critic/checkers/internal/astwalk"
+	"github.com/go-critic/go-critic/framework/linter"
 	"github.com/go-toolsmith/astp"
 )
 
 func init() {
-	var info lintpack.CheckerInfo
+	var info linter.CheckerInfo
 	info.Name = "initClause"
 	info.Tags = []string{"style", "opinionated", "experimental"}
 	info.Summary = "Detects non-assignment statements inside if/switch init clause"
@@ -19,14 +19,14 @@ func init() {
 if cond {
 }`
 
-	collection.AddChecker(&info, func(ctx *lintpack.CheckerContext) lintpack.FileWalker {
+	collection.AddChecker(&info, func(ctx *linter.CheckerContext) linter.FileWalker {
 		return astwalk.WalkerForStmt(&initClauseChecker{ctx: ctx})
 	})
 }
 
 type initClauseChecker struct {
 	astwalk.WalkHandler
-	ctx *lintpack.CheckerContext
+	ctx *linter.CheckerContext
 }
 
 func (c *initClauseChecker) VisitStmt(stmt ast.Stmt) {