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