error: #[event_listener] function must have at least one parameter (the event)
 --> tests/compile_fail/missing_event_param.rs:8:1
  |
8 | async fn on_event() -> HandlerResult {
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused import: `jaeb::HandlerResult`
 --> tests/compile_fail/missing_event_param.rs:4:5
  |
4 | use jaeb::HandlerResult;
  |     ^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
