Rollup of 7 pull requests

Successful merges:

 - rust-lang#130234 (improve compile errors for invalid ptr-to-ptr casts with trait objects)
 - rust-lang#130752 (Improve assembly test for CMSE ABIs)
 - rust-lang#130764 (Separate collection of crate-local inherent impls from error tracking)
 - rust-lang#130788 (Pin memchr to 2.5.0 in the library rather than rustc_ast)
 - rust-lang#130789 (add InProgress ErrorKind gated behind io_error_inprogress feature)
 - rust-lang#130793 (Mention `COMPILETEST_VERBOSE_CRASHES` on crash test failure)
 - rust-lang#130798 (rustdoc: inherit parent's stability where applicable)

Failed merges:

 - rust-lang#130735 (Simple validation for unsize coercion in MIR validation)

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

Rollup merge of rust-lang#130764 - compiler-errors:inherent, r=estebank

Separate collection of crate-local inherent impls from error tracking

rust-lang#119895 changed the return type of the `crate_inherent_impls` query from `CrateInherentImpls` to `Result<CrateInherentImpls, ErrorGuaranteed>` to avoid needing to use the non-parallel-friendly `track_errors()` to track if an error was reporting from within the query... This was mostly fine until rust-lang#121113, which stopped halting compilation when we hit an `Err(ErrorGuaranteed)` in the `crate_inherent_impls` query.

Thus we proceed onwards to typeck, and since a return type of `Result<CrateInherentImpls, ErrorGuaranteed>` means that the query can *either* return one of "the list inherent impls" or "error has been reported", later on when we want to assemble method or associated item candidates for inherent impls, we were just treating any `Err(ErrorGuaranteed)` return value as if Rust had no inherent impls defined anywhere at all! This leads to basically every inherent method call failing with an error, lol, which was reported in rust-lang#127798.

This PR changes the `crate_inherent_impls` query to return `(CrateInherentImpls, Result<(), ErrorGuaranteed>)`, i.e. returning the inherent impls collected *and* whether an error was reported in the query itself. It firewalls the latter part of that query into a new `crate_inherent_impls_validity_check` just for the `ensure()` call.

This fixes rust-lang#127798.

Separate collection of crate-local inherent impls from error tracking

rust-lang#119895 changed the return type of the `crate_inherent_impls` query from `CrateInherentImpls` to `Result<CrateInherentImpls, ErrorGuaranteed>` to avoid needing to use the non-parallel-friendly `track_errors()` to track if an error was reporting from within the query... This was mostly fine until rust-lang#121113, which stopped halting compilation when we hit an `Err(ErrorGuaranteed)` in the `crate_inherent_impls` query.

Thus we proceed onwards to typeck, and since a return type of `Result<CrateInherentImpls, ErrorGuaranteed>` means that the query can *either* return one of "the list inherent impls" or "error has been reported", later on when we want to assemble method or associated item candidates for inherent impls, we were just treating any `Err(ErrorGuaranteed)` return value as if Rust had no inherent impls defined anywhere at all! This leads to basically every inherent method call failing with an error, lol, which was reported in rust-lang#127798.

This PR changes the `crate_inherent_impls` query to return `(CrateInherentImpls, Result<(), ErrorGuaranteed>)`, i.e. returning the inherent impls collected *and* whether an error was reported in the query itself. It firewalls the latter part of that query into a new `crate_inherent_impls_validity_check` just for the `ensure()` call.

This fixes rust-lang#127798.