From bc55cd9f9bc9c5bcf10da91c5bb1c66467add469 Mon Sep 17 00:00:00 2001
From: Jim Blandy <jimb@red-bean.com>
Date: Thu, 7 Apr 2022 00:34:01 +0000
Subject: [PATCH] Bug 1763305: Update minimum Rust version to >= 1.59.0
 r=glandium

Differential Revision: https://phabricator.services.mozilla.com/D143007
---
 docs/writing-rust-code/update-policy.md        | 18 ++++++++++++------
 python/mozboot/mozboot/util.py                 |  2 +-
 taskcluster/ci/build/linux-base-toolchains.yml |  8 ++++----
 3 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/docs/writing-rust-code/update-policy.md b/docs/writing-rust-code/update-policy.md
index 09d86cac22dc..8d01c16b571f 100644
--- a/docs/writing-rust-code/update-policy.md
+++ b/docs/writing-rust-code/update-policy.md
@@ -9,10 +9,16 @@ release. Both benefit from the predictability of a schedule.
 
 ## Schedule
 
-Release Firefox requirements:
+Here are the Rust versions for each Firefox version.
 
-| Firefox Version | Uses | Requires | Rust release date | Nightly Soft Freeze | Firefox release date |
-|-----------------|------|----------|-------------------|---------------------|----------------------|
+- The "Uses" column indicates the version of Rust used to build
+  releases shipped to users.
+
+- The "Requires" column indicates the oldest version of Rust that can
+  successfully build the sources.
+  
+| Firefox Version | Uses | Requires | Rust "Uses" release date | Nightly Soft Freeze | Firefox release date |
+|-----------------|------|----------|--------------------------|---------------------|----------------------|
 | Firefox 56 | Rust 1.19.0 | 1.17.0 | 2017 April 27 | | 2017 September 26
 | Firefox 57 | Rust 1.19.0 | 1.19.0 | 2017 July 20 | | 2017 November 14
 | Firefox 58 | Rust 1.21.0 | 1.21.0 | 2017 October 12 | | 2018 January 16
@@ -56,10 +62,10 @@ Release Firefox requirements:
 | Firefox 96 | Rust 1.57.0 | 1.53.0 | 2021 December 2 | 2021 December 2 | 2022 January 11
 | Firefox 97 | Rust 1.57.0 | 1.57.0 | 2021 December 2 | 2022 January 6 | 2022 February 8
 | Firefox 98 | Rust 1.58.0 | 1.57.0 | 2022 January 13 | 2022 February 2 | 2022 March 8
+| Firefox 99 | Rust 1.59.0 | 1.57.0 | 2022 February 24 | 2022 March 3 | 2022 April 5
+| Firefox 100 | Rust 1.59.0 | 1.57.0 | 2022 February 24 | 2022 March 31 | 2022 May 3
+| Firefox 101 | Rust 1.60.0 | 1.59.0 | 2022 April 7 | 2022 April 28 | 2022 May 31
 | **Estimated** |
-| Firefox 99 | Rust 1.59.0 | ? | 2022 February 24 | 2022 March 3 | 2022 April 5
-| Firefox 100 | Rust 1.59.0 | ? | 2022 February 24 | 2022 March 31 | 2022 May 3
-| Firefox 101 | Rust 1.60.0 | ? | 2022 April 7 | 2022 April 28 | 2022 May 31
 | Firefox 102 | Rust 1.61.0 | ? | 2022 May 19 | 2022 May 26 | 2022 June 28
 | Firefox 103 | Rust 1.61.0 | ? | 2022 May 19 | 2022 June 23 | 2022 July 27
 | Firefox 104 | Rust 1.62.0 | ? | 2022 June 30 | 2022 July 21 | 2022 August 23
diff --git a/python/mozboot/mozboot/util.py b/python/mozboot/mozboot/util.py
index 1d6d546ea4d1..86720993d0fa 100644
--- a/python/mozboot/mozboot/util.py
+++ b/python/mozboot/mozboot/util.py
@@ -23,7 +23,7 @@ if sys.version_info < (3,):
 else:
     from urllib.request import urlopen
 
-MINIMUM_RUST_VERSION = "1.57.0"
+MINIMUM_RUST_VERSION = "1.59.0"
 
 
 def get_tools_dir(srcdir=False):
diff --git a/taskcluster/ci/build/linux-base-toolchains.yml b/taskcluster/ci/build/linux-base-toolchains.yml
index 4de0edc7ae6f..ed637956c399 100644
--- a/taskcluster/ci/build/linux-base-toolchains.yml
+++ b/taskcluster/ci/build/linux-base-toolchains.yml
@@ -38,7 +38,7 @@ linux64-base-toolchains/opt:
         toolchain:
             - linux64-clang-5.0
             - linux64-gcc-7
-            - linux64-rust-1.57
+            - linux64-rust-1.59
             - linux64-cbindgen
             - linux64-dump_syms
             - linux64-sccache
@@ -78,7 +78,7 @@ linux64-base-toolchains/debug:
         toolchain:
             - linux64-clang-5.0
             - linux64-gcc-7
-            - linux64-rust-1.57
+            - linux64-rust-1.59
             - linux64-cbindgen
             - linux64-dump_syms
             - linux64-sccache
@@ -114,7 +114,7 @@ linux64-base-toolchains-clang/opt:
         toolchain:
             - linux64-binutils-2.31.1
             - linux64-clang-5.0
-            - linux64-rust-1.57
+            - linux64-rust-1.59
             - linux64-cbindgen
             - linux64-dump_syms
             - linux64-nasm-2.14.02
@@ -152,7 +152,7 @@ linux64-base-toolchains-clang/debug:
         toolchain:
             - linux64-binutils-2.31.1
             - linux64-clang-5.0
-            - linux64-rust-1.57
+            - linux64-rust-1.59
             - linux64-cbindgen
             - linux64-dump_syms
             - linux64-nasm-2.14.02