rust/tests/ui/async-await/in-trait/unconstrained-impl-region.rs

20 lines
415 B
Rust

// 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() {}