error[E0309]: the parameter type `Self` may not live long enough --> $DIR/regions-infer-bound-from-trait-self.rs:46:9 | LL | check_bound(x, self) | ^^^^^^^^^^^^^^^^^^^^ | = help: consider adding an explicit lifetime bound `Self: 'a`... = note: ...so that the type `Self` will meet its required lifetime bounds error: aborting due to previous error For more information about this error, try `rustc --explain E0309`.