| error: variable does not need to be mutable | |
| --> $DIR/unused-mut-issue-50343.rs:15:33 | |
| | | |
| LL | vec![(42, 22)].iter().map(|(mut x, _y)| ()).count(); | |
| | ----^ | |
| | | | |
| | help: remove this `mut` | |
| | | |
| note: lint level defined here | |
| --> $DIR/unused-mut-issue-50343.rs:12:9 | |
| | | |
| LL | #![deny(unused_mut)] | |
| | ^^^^^^^^^^ | |
| error: aborting due to previous error | |