Allow old toolchain on images with CUSTOM_MINGW

Author: cuviper

.github/workflows/ci.yml

@@ -389,26 +389,26 @@ jobs:
             os: windows-latest-xl
           - name: i686-mingw-1
             env:
-              RUST_CONFIGURE_ARGS: "--build=i686-pc-windows-gnu"
+              RUST_CONFIGURE_ARGS: "--build=i686-pc-windows-gnu --set llvm.allow-old-toolchain"
               SCRIPT: make ci-mingw-subset-1
               CUSTOM_MINGW: 1
             os: windows-latest-xl
           - name: i686-mingw-2
             env:
-              RUST_CONFIGURE_ARGS: "--build=i686-pc-windows-gnu"
+              RUST_CONFIGURE_ARGS: "--build=i686-pc-windows-gnu --set llvm.allow-old-toolchain"
               SCRIPT: make ci-mingw-subset-2
               CUSTOM_MINGW: 1
             os: windows-latest-xl
           - name: x86_64-mingw-1
             env:
               SCRIPT: make ci-mingw-subset-1
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-profiler"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-profiler --set llvm.allow-old-toolchain"
               CUSTOM_MINGW: 1
             os: windows-latest-xl
           - name: x86_64-mingw-2
             env:
               SCRIPT: make ci-mingw-subset-2
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-profiler"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-profiler --set llvm.allow-old-toolchain"
               CUSTOM_MINGW: 1
             os: windows-latest-xl
           - name: dist-x86_64-msvc
@@ -432,15 +432,15 @@ jobs:
             os: windows-latest-xl
           - name: dist-i686-mingw
             env:
-              RUST_CONFIGURE_ARGS: "--build=i686-pc-windows-gnu --enable-full-tools --enable-profiler"
+              RUST_CONFIGURE_ARGS: "--build=i686-pc-windows-gnu --enable-full-tools --enable-profiler --set llvm.allow-old-toolchain"
               SCRIPT: python x.py dist
               CUSTOM_MINGW: 1
               DIST_REQUIRE_ALL_TOOLS: 1
             os: windows-latest-xl
           - name: dist-x86_64-mingw
             env:
               SCRIPT: python x.py dist
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-full-tools --enable-profiler"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-gnu --enable-full-tools --enable-profiler --set llvm.allow-old-toolchain"
               CUSTOM_MINGW: 1
               DIST_REQUIRE_ALL_TOOLS: 1
             os: windows-latest-xl

src/ci/github-actions/ci.yml

@@ -596,29 +596,39 @@ jobs:
 
           - name: i686-mingw-1
             env:
-              RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
+              RUST_CONFIGURE_ARGS: >-
+                --build=i686-pc-windows-gnu
+                --set llvm.allow-old-toolchain
               SCRIPT: make ci-mingw-subset-1
               CUSTOM_MINGW: 1
             <<: *job-windows-xl
 
           - name: i686-mingw-2
             env:
-              RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
+              RUST_CONFIGURE_ARGS: >-
+                --build=i686-pc-windows-gnu
+                --set llvm.allow-old-toolchain
               SCRIPT: make ci-mingw-subset-2
               CUSTOM_MINGW: 1
             <<: *job-windows-xl
 
           - name: x86_64-mingw-1
             env:
               SCRIPT: make ci-mingw-subset-1
-              RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-profiler
+              RUST_CONFIGURE_ARGS: >-
+                --build=x86_64-pc-windows-gnu
+                --enable-profiler
+                --set llvm.allow-old-toolchain
               CUSTOM_MINGW: 1
             <<: *job-windows-xl
 
           - name: x86_64-mingw-2
             env:
               SCRIPT: make ci-mingw-subset-2
-              RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-profiler
+              RUST_CONFIGURE_ARGS: >-
+                --build=x86_64-pc-windows-gnu
+                --enable-profiler
+                --set llvm.allow-old-toolchain
               CUSTOM_MINGW: 1
             <<: *job-windows-xl
 
@@ -663,7 +673,11 @@ jobs:
 
           - name: dist-i686-mingw
             env:
-              RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-full-tools --enable-profiler
+              RUST_CONFIGURE_ARGS: >-
+                --build=i686-pc-windows-gnu
+                --enable-full-tools
+                --enable-profiler
+                --set llvm.allow-old-toolchain
               SCRIPT: python x.py dist
               CUSTOM_MINGW: 1
               DIST_REQUIRE_ALL_TOOLS: 1
@@ -672,7 +686,11 @@ jobs:
           - name: dist-x86_64-mingw
             env:
               SCRIPT: python x.py dist
-              RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-full-tools --enable-profiler
+              RUST_CONFIGURE_ARGS: >-
+                --build=x86_64-pc-windows-gnu
+                --enable-full-tools
+                --enable-profiler
+                --set llvm.allow-old-toolchain
               CUSTOM_MINGW: 1
               DIST_REQUIRE_ALL_TOOLS: 1
             <<: *job-windows-xl