Auto merge of #150430 - JonathanBrouwer:rollup-seh9m66, r=JonathanBrouwer

Rollup of 2 pull requests

Successful merges:

 - rust-lang/rust#150393 (Document relative and absolute paths handling in `--remap-path-prefix`)
 - rust-lang/rust#150405 (Don't use `matches!` when `==` suffices)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors