error[E0594]: cannot assign to `*n`, which is behind a `&` reference --> $DIR/let-else-binding-explicit-mut.rs:10:5 | LL | *n += 1; | ^^^^^^^ `n` is a `&` reference, so the data it refers to cannot be written error[E0594]: cannot assign to `*n`, which is behind a `&` reference --> $DIR/let-else-binding-explicit-mut.rs:14:5 | LL | *n += 1; | ^^^^^^^ `n` is a `&` reference, so the data it refers to cannot be written error[E0594]: cannot assign to `*n`, which is behind a `&` reference --> $DIR/let-else-binding-explicit-mut.rs:18:5 | LL | *n += 1; | ^^^^^^^ `n` is a `&` reference, so the data it refers to cannot be written error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0594`.