Auto merge of rust-lang#119864 - matthiaskrgr:rollup-mc2qz13, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#119448 (annotate-snippets: update to 0.10)
 - rust-lang#119813 (Silence some follow-up errors [2/x])
 - rust-lang#119836 (chore: remove unnecessary blank line)
 - rust-lang#119841 (Remove `DiagnosticBuilder::buffer`)
 - rust-lang#119842 (coverage: Add enums to accommodate other kinds of coverage mappings)
 - rust-lang#119845 (rint: further doc tweaks)
 - rust-lang#119852 (give const-err4 a more descriptive name)
 - rust-lang#119853 (rustfmt.toml: don't ignore just any tests path, only root one)

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

Author: bors

clippy_lints/src/doc/needless_doctest_main.rs

@@ -53,7 +53,7 @@ pub fn check(
                 let mut parser = match maybe_new_parser_from_source_str(&sess, filename, code) {
                     Ok(p) => p,
                     Err(errs) => {
-                        drop(errs);
+                        errs.into_iter().for_each(|err| err.cancel());
                         return (false, test_attr_spans);
                     },
                 };