1 error[E0004]: non-exhaustive patterns: `(None, None)` and `(Some(_), Some(_))` not covered
2 --> $DIR/issue-2111.rs:2:11
5 | ^^^^^^ patterns `(None, None)` and `(Some(_), Some(_))` not covered
7 = note: the matched value is of type `(Option<usize>, Option<usize>)`
8 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
10 LL ~ (Some(_), None) | (None, Some(_)) => {}
11 LL + (None, None) | (Some(_), Some(_)) => todo!()
14 error: aborting due to previous error
16 For more information about this error, try `rustc --explain E0004`.