Rollup merge of #100730 - CleanCut:diagnostics-rustc_monomor... ...was bad docs. Fixed in https://github.com/rust-lang/rustc-dev-guide... ...this is merged in? --> https://github.com/rust-lang/rust/pull/100694 ...struct_span_lint_hir](https://github.com/rust-lang/rust/blob/8064a495086c2e6... ...seems like [this code](https://github.com/rust-lang/rust/blob/0b79f758c9aa664...