| error[E0499]: cannot borrow `x` as mutable more than once at a time | |
| --> $DIR/borrowck-autoref-3261.rs:15:9 | |
| | | |
| LL | (&mut x).with( | |
| | -------- ---- first borrow later used by call | |
| | | | |
| | first mutable borrow occurs here | |
| LL | |opt| { | |
| | ^^^^^ second mutable borrow occurs here | |
| ... | |
| LL | x = X(Either::Left((0, 0))); | |
| | - second borrow occurs due to use of `x` in closure | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0499`. |