Auto merge of #142241 - Kobzol:disable-ci-rustc-on-ci, r=jieyouxu

Disable download-rustc on CI

Should resolve https://rust-lang.zulipchat.com/#narrow/channel/326414-t-infra.2Fbootstrap/topic/aarch64-apple.20try.20job.20doesn.27t.20work/with/522659759.

r? `@jieyouxu`

Author: bors

src/ci/run.sh

@@ -186,9 +186,11 @@ else
   # Download GCC from CI on test builders
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set gcc.download-ci-gcc=true"
 
-  if [ "$NO_DOWNLOAD_CI_RUSTC" = "" ]; then
-    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.download-rustc=if-unchanged"
-  fi
+  # download-rustc seems to be broken on CI after the stage0 redesign
+  # Disable it until these issues are debugged and resolved
+#  if [ "$NO_DOWNLOAD_CI_RUSTC" = "" ]; then
+#    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.download-rustc=if-unchanged"
+#  fi
 fi
 
 if [ "$ENABLE_GCC_CODEGEN" = "1" ]; then