error[E0277]: the trait bound `Box<{integer}>: Foo` is not satisfied --> $DIR/kindck-inherited-copy-bound.rs:17:16 | LL | take_param(&x); | ---------- ^^ the trait `Copy` is not implemented for `Box<{integer}>` | | | required by a bound introduced by this call | note: required for `Box<{integer}>` to implement `Foo` --> $DIR/kindck-inherited-copy-bound.rs:10:14 | LL | impl Foo for T { | ---- ^^^ ^ | | | unsatisfied trait bound introduced here note: required by a bound in `take_param` --> $DIR/kindck-inherited-copy-bound.rs:13:17 | LL | fn take_param(foo: &T) { } | ^^^ required by this bound in `take_param` error[E0038]: the trait `Foo` is not dyn compatible --> $DIR/kindck-inherited-copy-bound.rs:23:24 | LL | let z = &x as &dyn Foo; | ^^^ `Foo` is not dyn compatible | note: for a trait to be dyn compatible it needs to allow building a vtable for more information, visit --> $DIR/kindck-inherited-copy-bound.rs:6:13 | LL | trait Foo : Copy { | --- ^^^^ ...because it requires `Self: Sized` | | | this trait is not dyn compatible... error: aborting due to 2 previous errors Some errors have detailed explanations: E0038, E0277. For more information about an error, try `rustc --explain E0038`.