1 error[E0503]: cannot use `x` because it was mutably borrowed
2 --> $DIR/borrowck-non-exhaustive.rs:12:11
5 | ------ borrow of `x` occurs here
7 | ^ use of borrowed `x`
10 | - borrow later used here
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0503`.