Auto merge of #122151 - GuillaumeGomez:rollup-hfxr9kv, r=GuillaumeGomez

Rollup of 10 pull requests

Successful merges:

 - #119888 (Stabilize the `#[diagnostic]` namespace and `#[diagnostic::on_unimplemented]` attribute)
 - #121089 (Remove `feed_local_def_id`)
 - #122004 (AST validation: Improve handling of inherent impls nested within functions and anon consts)
 - #122087 (Add missing background color for top-level rust documentation page and increase contrast by setting text color to black)
 - #122136 (Include all library files in artifact summary on CI)
 - #122137 (Don't pass a break scope to `Builder::break_for_else`)
 - #122138 (Record mtime in bootstrap's LLVM linker script)
 - #122141 (sync (try_)instantiate_mir_and_normalize_erasing_regions implementation)
 - #122142 (cleanup rustc_infer)
 - #122147 (Make `std::os::unix::ucred` module private)

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

Author: bors