1 error[E0502]: cannot borrow `*x.1` as immutable because it is also borrowed as mutable
2 --> $DIR/feature-gate-nll.rs:15:13
5 | ------ mutable borrow occurs here
7 | ^^^^^ immutable borrow occurs here
10 | - mutable borrow later used here
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0502`.