File: async-lifetimes.rs

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rustc 1.88.0%2Bdfsg1-1
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//@ check-pass
//@ edition: 2021

trait MyTrait<'a, 'b, T> {
    #[allow(async_fn_in_trait)]
    async fn foo(&'a self, key: &'b T) -> (&'a Self, &'b T);
}

impl<'a, 'b, T, U> MyTrait<'a, 'b, T> for U {
    async fn foo(&'a self, key: &'b T) -> (&'a U, &'b T) {
        (self, key)
    }
}

fn main() {}