error[E0277]: the trait bound `u16: Trait` is not satisfied --> $DIR/on-structs-and-enums-in-impls.rs:20:6 | LL | impl PolyTrait> for Struct { | ^^^^^^^^^^^^^^^^^^^ the trait `Trait` is not implemented for `u16` | help: this trait has no implementations, consider adding one --> $DIR/on-structs-and-enums-in-impls.rs:1:1 | LL | trait Trait {} | ^^^^^^^^^^^ note: required by a bound in `Foo` --> $DIR/on-structs-and-enums-in-impls.rs:3:14 | LL | struct Foo { | ^^^^^ required by this bound in `Foo` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.