See #t-infra/bootstrap > x run rustfmt works but x test rustfmt fails to compile.
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// Copy the compiler into the correct sysroot. |
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// NOTE(#108767): We intentionally don't copy `rustc-dev` artifacts until they're requested with `builder.ensure(Rustc)`. |
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// This fixes an issue where we'd have multiple copies of libc in the sysroot with no way to tell which to load. |
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// There are a few quirks of bootstrap that interact to make this reliable: |
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// 1. The order `Step`s are run is hard-coded in `builder.rs` and not configurable. This |
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// avoids e.g. reordering `test::UiFulldeps` before `test::Ui` and causing the latter to |
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// fail because of duplicate metadata. |
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// 2. The sysroot is deleted and recreated between each invocation, so running `x test |
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// ui-fulldeps && x test ui` can't cause failures. |
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let mut filtered_files = Vec::new(); |
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let mut add_filtered_files = |suffix, contents| { |
See #t-infra/bootstrap > x run rustfmt works but x test rustfmt fails to compile.
rust/src/bootstrap/src/core/build_steps/compile.rs
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