| // edition: 2021 | |
| pub(crate) trait Inbox<M> { | |
| async fn next(self) -> M; | |
| } | |
| pub(crate) trait Actor: Sized { | |
| type Message; | |
| async fn on_mount(self, _: impl Inbox<Self::Message>); | |
| } | |
| impl<'a> Actor for () { | |
| //~^ ERROR the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates | |
| type Message = &'a (); | |
| async fn on_mount(self, _: impl Inbox<&'a ()>) {} | |
| } | |
| fn main() {} |