error[E0049]: method `bar` has 0 type parameters but its trait declaration has 1 type parameter --> $DIR/trait-more-generics-than-impl.rs:10:11 | LL | fn bar() -> impl Sized; | - expected 1 type parameter ... LL | fn bar() -> impl Sized {} | ^ found 0 type parameters error: aborting due to previous error For more information about this error, try `rustc --explain E0049`.