| error[E0389]: cannot assign to data in a `&` reference | |
| --> $DIR/E0389.rs:8:5 | |
| | | |
| LL | fancy_ref.num = 6; //~ ERROR E0389 | |
| | ^^^^^^^^^^^^^^^^^ assignment into an immutable reference | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0389`. |