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T
Michael Bolin 313fb95989 ci: keep rust-ci-full Windows argument-comment-lint on packaged wrapper (#16130)
## Why

PR #16106 switched `rust-ci-full` over to the native Bazel-backed
`argument-comment-lint` path on all three platforms.

That works on Linux and macOS, but the Windows leg in `rust-ci-full` now
fails before linting starts: Bazel dies while building `rules_rust`'s
`process_wrapper` tool, so `main` reports an `argument-comment-lint`
failure even though no Rust lint finding was produced.

Until native Windows Bazel linting is repaired, `rust-ci-full` should
keep the same Windows split that `rust-ci.yml` already uses.

## What changed

- restored the Windows-only nightly `argument-comment-lint` toolchain
setup in `rust-ci-full`
- limited the Bazel-backed lint step in `rust-ci-full` to non-Windows
runners
- routed the Windows runner back through
`tools/argument-comment-lint/run-prebuilt-linter.py`
- left the Linux and macOS `rust-ci-full` behavior unchanged

## Test plan

- loaded `.github/workflows/rust-ci-full.yml` and
`.github/workflows/rust-ci.yml` with `python3` + `yaml.safe_load(...)`
- inspected failing Actions run `23692864849`, especially job
`69023229311`, to confirm the Windows failure occurs in Bazel
`process_wrapper` setup before lint output is emitted

## References

- #16106
313fb95989 ยท 2026-03-28 14:50:19 -07:00
History
..

Workflow Strategy

The workflows in this directory are split so that pull requests get fast, review-friendly signal while main still gets the full cross-platform verification pass.

Pull Requests

  • bazel.yml is the main pre-merge verification path for Rust code. It runs Bazel test and Bazel clippy on the supported Bazel targets.
  • rust-ci.yml keeps the Cargo-native PR checks intentionally small:
    • cargo fmt --check
    • cargo shear
    • argument-comment-lint on Linux, macOS, and Windows
    • tools/argument-comment-lint package tests when the lint or its workflow wiring changes

The PR workflow still keeps the Linux lint lane on the default-targets-only invocation for now, but the released linter runs on Linux, macOS, and Windows before merge.

Post-Merge On main

  • bazel.yml also runs on pushes to main. This re-verifies the merged Bazel path and helps keep the BuildBuddy caches warm.
  • rust-ci-full.yml is the full Cargo-native verification workflow. It keeps the heavier checks off the PR path while still validating them after merge:
    • the full Cargo clippy matrix
    • the full Cargo nextest matrix
    • release-profile Cargo builds
    • cross-platform argument-comment-lint
    • Linux remote-env tests

Rule Of Thumb

  • If a build/test/clippy check can be expressed in Bazel, prefer putting the PR-time version in bazel.yml.
  • Keep rust-ci.yml fast enough that it usually does not dominate PR latency.
  • Reserve rust-ci-full.yml for heavyweight Cargo-native coverage that Bazel does not replace yet.