Tracking Issue for warnings (config build.warnings)

[epage]

Summary

Original issue: #8424, #14258
Implementation: #14388
Documentation: https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#warnings

Allows control over warnings via a new Cargo configuration option build.warnings.

Unresolved Issues

• What operations should this apply to and is [build] the right home for this?
• What non-rustc lints are in scope? See also Add --deny-warnings functionality for all commands. #8424 (comment)
  • Including build script warnings? See Add --deny-warnings functionality for all commands. #8424 (comment)

Future Extensions

• CLI support
  • If or where we have individual lint level control (cargo clippy), these looking odd next to each other
  • See also Add --deny-warnings functionality for all commands. #8424 (comment)
• If we add a new level, config/cli to control it

About tracking issues

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A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.