Use `u32` instead of `usize` for counting them.

…projection

…y789

The number of tests does not depend on the architecture's pointer width

Use `u32` instead of `usize` for counting them.

…ify-output-files, r=jieyouxu

Migrate rustdoc verify output files

Part of rust-lang#121876.

r? ```@jieyouxu```

…jection, r=compiler-errors

MIR validation: ensure that downcast projection is followed by field projection

Cc rust-lang#120369

…imulacrum

Use grep to implement verify-line-endings

Unless I'm missing something (which I might be!) then `verify-line-endings` is easy to implement with `grep` rather than using a bespoke tool with varying availability.