| error[E0596]: cannot borrow data in a `&` reference as mutable | |
| --> $DIR/dont-print-desugared-async.rs:5:20 | |
| | | |
| LL | async fn async_fn(&ref mut s: &[i32]) {} | |
| | ^^^^^^^^^ cannot borrow as mutable through `&` reference | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0596`. |