531cb83fcf
Rollup of 5 pull requests Successful merges: - #117737 (Remove `-Zkeep-hygiene-data`.) - #117830 (Small improvements in object lifetime default code) - #117858 (Compute layout with spans for better cycle errors in coroutines) - #117863 (Remove some unused stuff from `rustc_index`) - #117872 (Cranelift isn't available on non-nightly channels) r? `@ghost` `@rustbot` modify labels: rollup
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.