error[E0594]: cannot assign to `*my_ref`, which is behind a `&` reference --> $DIR/issue-51244.rs:3:5 | LL | *my_ref = 0; | ^^^^^^^^^^^ `my_ref` is a `&` reference, so the data it refers to cannot be written | help: consider changing this to be a mutable reference | LL | let ref mut my_ref @ _ = 0; | ~~~~~~~~~~~~~~ error: aborting due to previous error For more information about this error, try `rustc --explain E0594`.