error[E0764]: mutable references are not allowed in the final value of statics --> $DIR/write_to_static_via_mut_ref.rs:1:26 | LL | static OH_NO: &mut i32 = &mut 42; | ^^^^^^^ error[E0594]: cannot assign to `*OH_NO`, as `OH_NO` is an immutable static item --> $DIR/write_to_static_via_mut_ref.rs:4:5 | LL | *OH_NO = 43; | ^^^^^^^^^^^ cannot assign error: aborting due to 2 previous errors Some errors have detailed explanations: E0594, E0764. For more information about an error, try `rustc --explain E0594`.