1error: Arguments cannot be empty, at least specify the condition for sync code 2 --> tests/ui/test_fail/01-empty-test.rs:9:1 3 | 49 | #[maybe_async::test()] 5 | ^^^^^^^^^^^^^^^^^^^^^^ 6 | 7 = note: this error originates in the attribute macro `maybe_async::test` (in Nightly builds, run with -Z macro-backtrace for more info) 8