error[E0309]: the associated type `<T as MyTrait<'_>>::Output` may not live long enough --> $DIR/projection-where-clause-env-wrong-lifetime.rs:14:5 | LL | bar::<<T as MyTrait<'a>>::Output>() | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: consider adding an explicit lifetime bound `<T as MyTrait<'_>>::Output: 'a`... = note: ...so that the type `<T as MyTrait<'_>>::Output` will meet its required lifetime bounds error: aborting due to previous error For more information about this error, try `rustc --explain E0309`.