| ------------------------------------- doesn't satisfy `std::boxed::Box<dyn Foo>: std::clone::Clone`
|
= note: the method `clone` exists but the following trait bounds were not satisfied:
- `dyn Foo: std::clone::Clone` which is required by `std::boxed::Box<dyn Foo>: std::clone::Clone`
- `dyn Foo: std::marker::Sized` which is required by `std::boxed::Box<dyn Foo>: std::clone::Clone`
+ `dyn Foo: std::marker::Sized`
+ which is required by `std::boxed::Box<dyn Foo>: std::clone::Clone`
+ `dyn Foo: std::clone::Clone`
+ which is required by `std::boxed::Box<dyn Foo>: std::clone::Clone`
= help: items from traits can only be used if the trait is implemented and in scope
= note: the following trait defines an item `clone`, perhaps you need to implement it:
candidate #1: `std::clone::Clone`