1error[E0228]: the lifetime bound for this object type cannot be deduced from context; please supply an explicit bound 2 --> $DIR/object-lifetime-default-dyn-binding-nonstatic1.rs:20:50 3 | 4LL | fn bar<'a>(x: &'a str) -> &'a dyn Foo<'a, Item = dyn Bar> { &() } 5 | ^^^^^^^ 6 7error: aborting due to previous error 8 9For more information about this error, try `rustc --explain E0228`. 10