Based on some poor suggestions produced when stablizing this lint and running
it on `manformed-generics.rs`

…sleywiser

Fix `ReErased` leaking into typeck due to `typeof(...)` recovery

Fixes rust-lang#100183

…=oli-obk

constify some `CStr` methods

This PR marks the following public APIs as `const`:
```rust
impl CStr {
    // feature(const_cstr_from_bytes)
    pub const fn from_bytes_until_nul(bytes: &[u8]) -> Result<&CStr, FromBytesUntilNulError>;
    pub const fn from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError>;

    // feature(const_cstr_to_bytes)
    pub const fn to_bytes(&self) -> &[u8];
    pub const fn to_bytes_with_nul(&self) -> &[u8];
    pub const fn to_str(&self) -> Result<&str, str::Utf8Error>;
}
```

r? ``@oli-obk`` (use of `const_eval_select` :P )
cc ``@mina86`` (you've asked for this <3 )

…stcsession-pt3, r=davidtwco

translations(rustc_session): migrates rustc_session to use SessionDiagnostic - Final

# Description
This is the final part of the rustc_session rust-lang#100717 (comment).

Please only review this [commit](rust-lang@a545347). The other ones are from the PR rust-lang#101041 that is not yet merged.

In this PR, we migrate the file `output.rs`

Add test for rust-lang#101211

Closes rust-lang#101211

…avidtwco

A `SubstitutionPart` is not considered a deletion if it replaces nothing with nothing

Fixes rust-lang#101689

…k, r=oli-obk

Allow unauthenticated users to add the `const-hack` label

Observed in rust-lang#101401.

cc ``@oli-obk``

…html-check, r=GuillaumeGomez

rustdoc: improve rustdoc HTML suggestions handling of nested generics

Based on some poor suggestions produced when stablizing this lint and running it on `manformed-generics.rs` in rust-lang#101720