| error[E0727]: `async` coroutines are not yet supported | |
| --> $DIR/async-coroutine-issue-67158.rs:5:13 | |
| | | |
| LL | async { yield print!(":C") }; | |
| | ^^^^^^^^^^^^^^^^^^ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0727`. |