rust/tests/ui/async-await/dont-print-desugared-async....

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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`.