Bug 1692352 - Update builders to rustc 1.50. r=firefox-build-system-reviewers,andi,dmajor

Differential Revision: https://phabricator.services.mozilla.com/D104948

taskcluster/ci/toolchain/rust.yml

@@ -27,12 +27,12 @@ linux64-rust-1.47:
         toolchain:
             - linux64-clang
 
-linux64-rust-1.49:
+linux64-rust-1.50:
     treeherder:
         symbol: TL(rust)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'i686-unknown-linux-gnu',
@@ -52,6 +52,9 @@ linux64-rust-nightly:
         arguments: [
             # First nightly with the version after 1.49.0, so that it's the
             # closest to 1.49 release that has a bigger version number.
+            # This can't be upgraded to the first with the version after 1.50.0
+            # because of https://github.com/rust-lang/rust/pull/80082, which
+            # reverted the changes needed to use -Zbuild-std in TSAN builds.
             '--channel', 'nightly-2020-11-14',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
@@ -79,13 +82,13 @@ linux64-rust-dev:
             - linux64-binutils
 
 
-linux64-rust-cross-1.49:
+linux64-rust-cross-1.50:
     description: "rust repack with macos and windows cross support"
     treeherder:
         symbol: TL(rust-cross)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-apple-darwin',
@@ -95,13 +98,13 @@ linux64-rust-cross-1.49:
         ]
         toolchain-alias: linux64-rust-cross
 
-linux64-rust-static-1.49:
+linux64-rust-static-1.50:
     description: "rust repack with static linking support"
     treeherder:
         symbol: TL(rust-static)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-musl',
@@ -134,15 +137,28 @@ linux64-rust-macos-1.49:
             '--target', 'x86_64-apple-darwin',
             '--target', 'aarch64-apple-darwin',
         ]
+
+linux64-rust-macos-1.50:
+    description: "rust repack with macos-cross support"
+    treeherder:
+        symbol: TL(rust-macos-1.50)
+    run:
+        arguments: [
+            '--channel', '1.50.0',
+            '--host', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-unknown-linux-gnu',
+            '--target', 'x86_64-apple-darwin',
+            '--target', 'aarch64-apple-darwin',
+        ]
         toolchain-alias: linux64-rust-macos
 
-linux64-rust-android-1.49:
+linux64-rust-android-1.50:
     description: "rust repack with android-cross support"
     treeherder:
         symbol: TL(rust-android)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'armv7-linux-androideabi',
@@ -170,13 +186,13 @@ linux64-rust-windows-1.47:
             '--target', 'i686-pc-windows-msvc',
         ]
 
-linux64-rust-windows-1.49:
+linux64-rust-windows-1.50:
     description: "rust repack with windows-cross support"
     treeherder:
         symbol: TL(rust-win)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-pc-windows-msvc',
@@ -196,12 +212,12 @@ win64-rust-1.47:
             '--target', 'aarch64-pc-windows-msvc',
         ]
 
-win64-rust-1.49:
+win64-rust-1.50:
     treeherder:
         symbol: TW64(rust)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-pc-windows-msvc',
             '--target', 'x86_64-pc-windows-msvc',
             '--target', 'i686-pc-windows-msvc',
@@ -209,12 +225,12 @@ win64-rust-1.49:
         ]
         toolchain-alias: win64-rust
 
-macosx64-rust-1.49:
+macosx64-rust-1.50:
     treeherder:
         symbol: TM(rust)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-apple-darwin',
             '--target', 'x86_64-apple-darwin',
         ]
@@ -233,12 +249,12 @@ mingw32-rust-1.47:
             '--target', 'x86_64-unknown-linux-gnu',
         ]
 
-mingw32-rust-1.49:
+mingw32-rust-1.50:
     treeherder:
         symbol: TMW(rust)
     run:
         arguments: [
-            '--channel', '1.49.0',
+            '--channel', '1.50.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'i686-unknown-linux-gnu',
             '--target', 'i686-pc-windows-gnu',