error[E0195]: lifetime parameters or bounds on method `foo` do not match the trait declaration --> $DIR/lifetime-mismatch.rs:13:17 | LL | async fn foo<'a>(&self); | ---- lifetimes in impl do not match this method in trait ... LL | async fn foo(&self) {} | ^ lifetimes do not match method in trait error: aborting due to previous error For more information about this error, try `rustc --explain E0195`.