This changes a mistake introduced in rust-lang#61195 where the mangling
workaround used was incorrect.

A semicolon is missing in the examples of compile_error.
Macros that expand to items must be delimited with braces or followed by a semicolon.

…eddyb

Fix some issues with `unwrap_usize` instead of `assert_usize`

Fixes rust-lang#61337.
Fixes rust-lang#61341.
Fixes rust-lang#61422.

r? @eddyb

…r=eddyb

codegen: change `$6d$` to `$u6d$`

This changes a mistake introduced in rust-lang#61195 where the mangling
workaround used was incorrect, resolving [this comment](rust-lang#61195 (comment)) from @eddyb.

r? @eddyb

Point at individual type args on arg count mismatch

- Point at individual type arguments on arg count mismatch
- Make generics always have a valid span, even when there are no args
- Explain that `impl Trait` introduces an implicit type argument

Fix rust-lang#55991.

Tweak wording when encountering `fn` call in pattern

Fix rust-lang#60642

Fix missing semicolon in doc

A semicolon is missing in the examples of compile_error.
Macros that expand to items must be delimited with braces or followed by a semicolon.

…hievink

Fix typo in AsRef doc