Free disk space on Windows 2025 runners
I've managed to reduce the time deletion takes by:
- Using powershell, which is generally faster for filesystem operations than msys2
- Performing deletions concurrently then waiting for them all to complete
It still takes 2-10 mins but that's not too bad.
Add an aarch64-msvc build running on ARM64 Windows
Resurrecting rust-lang/rust#126341
Per <https://github.com/rust-lang/rfcs/pull/3817> we intend to promote `aarch64-pc-windows-msvc` to Tier 1. As part of that work, we are adding a pre-merge CI job to validate that changes do not break this target.
Additionally, for consistency, the `dist-aarch64-msvc` job will also be run on Arm64 Windows runners.
r? ``@Kobzol``
try-job: `*aarch64-msvc*`
That branch is essentially the same as the `try` branch, it also needs S3 permissions.
Long term, we should move rollup unrolling from rustc-perf to bors, so that we can have only a single try branch.
Revert "Remove Win SDK 10.0.26100.0 from CI"
Part of #137733.
Resolves#137733.
The remove-latest-windows-sdk workaround workaround should no longer be necessary, now that we bumped (1) cargo `cc` and (2) `rustc_{codegen_ssa,llvm}` `cc`.
This reverts commit 25617c7e69, the remove-latest-windows-sdk workaround from #137753.
try-job: i686-msvc-1
try-job: i686-msvc-2
try-job: dist-i686-msvc
Rewrite the `ci.py` script in Rust
It would seem that I would learn by now that any script written in Python will become unmaintainable sooner or later, but alas..
r? `@marcoieni`
try-job: aarch64-gnu
try-job: dist-x86_64-linux-alt
try-job: x86_64-msvc-ext2
Fixes: https://github.com/rust-lang/rust/issues/137013
Bump sccache in CI to 0.9.1
We haven't updated the used sccache version for years, it has accrued a bunch of fixes and features in the meantime. It now supports the `--show-adv-stats` flag, which gives a more detailed summary of the results of caching. And it can also cache Rust code, which could be useful in the future (https://github.com/rust-lang/rust/pull/136942 - although now there are no large wins).
It also supports caching PGO now, but since the PGO profiles are always different, it won't make any real difference.
https://github.com/rust-lang/rust/pull/133076 previously tried to update the version to 0.3 (CC `@klensy)`
r? `@marcoieni`
There is a difference between the `image` (the Dockerfile), the `name` of the job (which determines also its properties) and the `full_name`, which includes the `auto/try/pr` prefix.
