| #[derive(Clone)] //~ trait objects must include the `dyn` keyword | |
| //~^ ERROR: the size for values of type `(dyn Foo + 'static)` cannot be known | |
| //~| ERROR: return type cannot have an unboxed trait object | |
| struct Foo; | |
| trait Foo {} //~ the name `Foo` is defined multiple times | |
| fn main() {} |