Suggestion for missing match arm includes a copy of a comment.

[m-ou-se]

fn main() {
    match Some(1) {
        Some(1) => {}
        // hello
        Some(_) => {}
    }
}

This produces the following help suggestion:

help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
5   ~         Some(_) => {}
6   +         // hello
7   +         None => todo!()
    |

The suggestion includes a copy of the // hello comment, which seems wrong.