1 error[E0499]: cannot borrow `x` as mutable more than once at a time
2 --> $DIR/issue-65131.rs:14:22
4 LL | get_pair(&mut x, &mut x);
5 | -------- ------ ^^^^^^ second mutable borrow occurs here
7 | | first mutable borrow occurs here
8 | first borrow later used by call
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0499`.