Demote metadata load warning to "info". #90544
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bjorn3 wanted these warnings to be available without rebuilding rustc, but apparently we don't have a mechanism that allows the warnings to be disabled by default, but enabled by e.g. an environment variable. |
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…henkov Demote metadata load warning to "info". There is a warn log message for whenever the crate loader fails to load metadata from a candidate file. I think this warning is too aggressive, as there are several situations where metadata information might not be found in a candidate file, which is normal. Also, this warning is somewhat confusing, and non-actionable in most cases for a user (most users will not know what it means). If the crate loader ultimately does not find a valid crate, then an error will be reported (and hopefully rust-lang#88368 will improve that error message). If a rustc developer wants to debug a loader problem, they can still use `RUSTC_LOG=rustc_metadata=debug` and get the details. There is more discussion of this particular warning at rust-lang#89795 (comment). Fixes rust-lang#90525
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…henkov Demote metadata load warning to "info". There is a warn log message for whenever the crate loader fails to load metadata from a candidate file. I think this warning is too aggressive, as there are several situations where metadata information might not be found in a candidate file, which is normal. Also, this warning is somewhat confusing, and non-actionable in most cases for a user (most users will not know what it means). If the crate loader ultimately does not find a valid crate, then an error will be reported (and hopefully rust-lang#88368 will improve that error message). If a rustc developer wants to debug a loader problem, they can still use `RUSTC_LOG=rustc_metadata=debug` and get the details. There is more discussion of this particular warning at rust-lang#89795 (comment). Fixes rust-lang#90525
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Rollup of 9 pull requests Successful merges: - rust-lang#90507 (Suggest `extern crate alloc` when using undeclared module `alloc`) - rust-lang#90530 (Simplify js tester a bit) - rust-lang#90533 (Add note about x86 instruction prefixes in asm! to unstable book) - rust-lang#90537 (Update aarch64 `target_feature` list for LLVM 12.) - rust-lang#90544 (Demote metadata load warning to "info".) - rust-lang#90554 (Clean up some `-Z unstable-options` in tests.) - rust-lang#90556 (Add more text and examples to `carrying_{add|mul}`) - rust-lang#90563 (rustbot allow labels) - rust-lang#90571 (Fix missing bottom border for headings in sidebar) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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There is a warn log message for whenever the crate loader fails to load metadata from a candidate file. I think this warning is too aggressive, as there are several situations where metadata information might not be found in a candidate file, which is normal. Also, this warning is somewhat confusing, and non-actionable in most cases for a user (most users will not know what it means).
If the crate loader ultimately does not find a valid crate, then an error will be reported (and hopefully #88368 will improve that error message).
If a rustc developer wants to debug a loader problem, they can still use
RUSTC_LOG=rustc_metadata=debugand get the details.There is more discussion of this particular warning at #89795 (comment).
Fixes #90525