Auto merge of #156576 - GuillaumeGomez:rollup-3CJ0vjd, r=GuillaumeGomez

Rollup of 3 pull requests

Successful merges:

 - rust-lang/rust#146220 (feat(rustdoc): stabilize `--emit` flag)
 - rust-lang/rust#153785 (Hand-written Debug implementation for `TypeTest`)
 - rust-lang/rust#156564 (Lint level cleanups)