| 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 | |
| | help: consider changing this to be a mutable reference: `&mut ref mut s` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0596`. |