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Don't re-use rustc cache when RUSTC_WRAPPER changes #9348

Merged
merged 1 commit into from
Apr 18, 2021
Merged

Don't re-use rustc cache when RUSTC_WRAPPER changes #9348

merged 1 commit into from
Apr 18, 2021

Commits on Apr 16, 2021

  1. Don't re-use rustc cache when RUSTC_WRAPPER changes 

    We cache initial `rustc --version` invocations, to speed up noop builds.

We check the mtime of `rustc` to bust the cache if the complier changed.
However, before this PR, we didn't look at mtimes of `RUSTC_WRAPPER` /
`RUSTC_WORKSPACE_WRAPPER`, so we could've re-use old cache with new
wrapper.
    @matklad
    matklad committed Apr 16, 2021
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