Bug 1594344 - Part 2: Fetch dump_syms toolchain on Windows builds. r=firefox-build-system-reviewers,chmanchester

This installs the rust-based `dump_syms` toolchain on Windows builds.

Differential Revision: https://phabricator.services.mozilla.com/D53319

--HG--
extra : moz-landing-system : lando

taskcluster/ci/build/windows.yml

@@ -7,6 +7,9 @@ job-defaults:
         using: mozharness
         use-caches: false
         tooltool-downloads: internal
+    fetches:
+        toolchain:
+            - win64-dump-syms
 
 win32/debug:
     description: "Win32 Debug"

taskcluster/ci/instrumented-build/kind.yml

@@ -150,6 +150,7 @@ jobs:
         fetches:
             toolchain:
                 - win64-clang-cl
+                - win64-dump-syms
                 - win64-rust
                 - win64-rust-size
                 - win64-cbindgen
@@ -182,6 +183,7 @@ jobs:
         fetches:
             toolchain:
                 - win64-clang-cl
+                - win64-dump-syms
                 - win64-rust
                 - win64-rust-size
                 - win64-cbindgen