1 error[E0739]: attribute should be applied to a function definition
2 --> $DIR/async-block.rs:6:13
4 LL | let _ = #[track_caller] async {
5 | _____________^^^^^^^^^^^^^^^_-
8 | |_____- not a function definition
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0739`.