| error[E0503]: cannot use `x` because it was mutably borrowed | |
| --> $DIR/unboxed-closures-borrow-conflict.rs:9:14 | |
| | | |
| LL | let f = || x += 1; | |
| | -- - borrow occurs due to use of `x` in closure | |
| | | | |
| | `x` is borrowed here | |
| LL | let _y = x; | |
| | ^ use of borrowed `x` | |
| LL | f; | |
| | - borrow later used here | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0503`. |