Auto merge of #89698 - matthiaskrgr:rollup-gna54x6, r=matthiaskrgr

Rollup of 10 pull requests

Successful merges:

 - #88707 (String.split_terminator: Add an example when using a slice of chars)
 - #89605 (Fix stabilization version for `bindings_after_at`)
 - #89634 (rustc_driver: Enable the `WARN` log level by default)
 - #89641 (make #[target_feature] work with `asm` register classes)
 - #89678 (Fix minor std::thread documentation typo)
 - #89684 (Fix asm docs typo)
 - #89687 (Move `read2_abbreviated` function into read2.rs)
 - #89693 (Add #[must_use] to stdin/stdout/stderr locks)
 - #89694 (Add #[must_use] to string/char transformation methods)
 - #89697 (Fix min LLVM version for bpf-types test)

Failed merges:

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