error[E0277]: the trait bound `T: Copy` is not satisfied --> $DIR/where-clause-constraints-are-local-for-trait-impl.rs:18:22 | LL | require_copy(self.x); | ------------ ^^^^^^ the trait `Copy` is not implemented for `T` | | | required by a bound introduced by this call | note: required by a bound in `require_copy` --> $DIR/where-clause-constraints-are-local-for-trait-impl.rs:1:20 | LL | fn require_copy<T: Copy>(x: T) {} | ^^^^ required by this bound in `require_copy` help: consider restricting type parameter `T` | LL | impl<T: std::marker::Copy> Foo<T> for Bar<T> { | +++++++++++++++++++ error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.