error[E0594]: cannot assign to `*n` which is behind a `&` reference --> $DIR/explicit-mut.rs:17:13 | LL | *n += 1; //~ ERROR cannot assign to immutable | ^^^^^^^ `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/explicit-mut.rs:25:13 | LL | *n += 1; //~ ERROR cannot assign to immutable | ^^^^^^^ `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/explicit-mut.rs:33:13 | LL | *n += 1; //~ ERROR cannot assign to immutable | ^^^^^^^ `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`.