1error[E0594]: cannot assign to `*x`, which is behind a `&` reference 2 --> $DIR/enum.rs:9:5 3 | 4LL | *x += 1; 5 | ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written 6 7error[E0594]: cannot assign to `*x`, which is behind a `&` reference 8 --> $DIR/enum.rs:13:9 9 | 10LL | *x += 1; 11 | ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written 12 13error[E0594]: cannot assign to `*x`, which is behind a `&` reference 14 --> $DIR/enum.rs:19:9 15 | 16LL | *x += 1; 17 | ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written 18 19error: aborting due to 3 previous errors 20 21For more information about this error, try `rustc --explain E0594`. 22