Auto merge of #133902 - Kobzol:ci-dist-arm-runner, r=MarcoIeni

CI: move `dist-arm-linux` to an ARM runner

First, I want to test whether we could actually move this to a free runner, vs moving to the 8-core ARM runner.

Fixes: rust-lang/infra-team#181

r? `@MarcoIeni`

try-job: dist-arm-linux

src/ci/docker/host-x86_64/dist-arm-linux/Dockerfile → src/ci/docker/host-aarch64/dist-arm-linux/Dockerfile

@@ -19,7 +19,7 @@ RUN sh /scripts/rustbuild-setup.sh
 WORKDIR /tmp
 
 COPY scripts/crosstool-ng-build.sh /scripts/
-COPY host-x86_64/dist-arm-linux/arm-linux-gnueabi.defconfig /tmp/crosstool.defconfig
+COPY host-aarch64/dist-arm-linux/arm-linux-gnueabi.defconfig /tmp/crosstool.defconfig
 RUN /scripts/crosstool-ng-build.sh
 
 COPY scripts/sccache.sh /scripts/

src/ci/github-actions/jobs.yml

@@ -43,7 +43,7 @@ runners:
     os: windows-2022-16core-64gb
     <<: *base-job
 
-  - &job-aarch64-linux
+  - &job-linux-8c-aarch64
     os: ubuntu-22.04-arm64-8core-32gb
 
 envs:
@@ -139,10 +139,10 @@ auto:
   #############################
 
   - image: aarch64-gnu
-    <<: *job-aarch64-linux
+    <<: *job-linux-8c-aarch64
 
   - image: aarch64-gnu-debug
-    <<: *job-aarch64-linux
+    <<: *job-linux-8c-aarch64
 
   - image: arm-android
     <<: *job-linux-4c
@@ -159,7 +159,7 @@ auto:
     <<: *job-linux-4c
 
   - image: dist-arm-linux
-    <<: *job-linux-8c
+    <<: *job-linux-8c-aarch64
 
   - image: dist-armhf-linux
     <<: *job-linux-4c