1 error[E0502]: cannot borrow `this.x` as mutable because it is also borrowed as immutable
2 --> $DIR/borrowck-closures-unique-imm.rs:23:9
5 | ------- immutable borrow occurs here
6 LL | &mut this.x; //~ ERROR cannot borrow
7 | ^^^^^^^^^^^ mutable borrow occurs here
9 | - borrow later used here
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0502`.