1 error[E0596]: cannot borrow data in a `&` reference as mutable
2 --> $DIR/let-else-binding-explicit-mut-borrow.rs:7:37
4 LL | let Some(n): &mut Option<i32> = &mut &Some(5i32) else {
5 | ^^^^^^^^^^^^^^^^ cannot borrow as mutable
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0596`.