Rollup of 6 pull requests

[matthiaskrgr]

Successful merges:

• std: <ExitStatus as Display>::fmt name the signal it died from #95833 (std: <ExitStatus as Display>::fmt name the signal it died from)
• rustdoc: Add more test coverage #97502 (rustdoc: Add more test coverage)
• update explicit impls error msg #97627 (update explicit impls error msg)
• Fix wrong suggestion for adding where clauses #97640 (Fix wrong suggestion for adding where clauses)
• don't use a span_note for ignored impls #97645 (don't use a span_note for ignored impls)
• Improve documentation for constructors of pinned Boxes #97655 (Improve documentation for constructors of pinned Boxes)

Failed merges:

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

[matthiaskrgr]

@bors r+ rollup=never p=6

[bors]

📌 Commit 3a68052 has been approved by matthiaskrgr

[bors]

⌛ Testing commit 3a68052 with merge 54f6305f73391d0b283ac51e9bb91eeea8829d21...

[bors]

💔 Test failed - checks-actions

[rust-log-analyzer]

The job dist-mips64-linux failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[RUSTC-TIMING] core test:false 24.706
[RUSTC-TIMING] addr2line test:false 0.529
[RUSTC-TIMING] gimli test:false 5.858
[RUSTC-TIMING] object test:false 5.890
error[E0531]: cannot find unit struct, unit variant or constant `SIGSTKFLT` in crate `libc`
    |
    |
736 |         libc::SIGSTKFLT => " (SIGSTKFLT)",
    |               ^^^^^^^^^ help: a constant with a similar name exists: `SIGSTKSZ`
   ::: /cargo/registry/src/git.luolix.top-1ecc6299db9ec823/libc-0.2.126/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs:817:1
    |
    |
817 | pub const SIGSTKSZ: ::size_t = 8192;
    | ------------------------------------ similarly named constant `SIGSTKSZ` defined here
For more information about this error, try `rustc --explain E0531`.
[RUSTC-TIMING] std test:false 2.995
error: could not compile `std` due to previous error
Build completed unsuccessfully in 0:06:40