| error[E0038]: the trait `Foo` cannot be made into an object |
| --> $DIR/arbitrary-self-types-not-object-safe.rs:33:13 |
| | |
| LL | trait Foo { |
| | --- this trait cannot be made into an object... |
| LL | fn foo(self: &Rc<Self>) -> usize; |
| | --------- |
| | | |
| | ...because method `foo`'s `self` parameter cannot be dispatched on |
| | help: consider changing method `foo`'s `self` parameter to be `&self`: `&Self` |
| ... |
| LL | let x = Rc::new(5usize) as Rc<dyn Foo>; |
| | ^^^^^^^^^^^^^^^ the trait `Foo` cannot be made into an object |
| | |
| = note: required because of the requirements on the impl of `std::ops::CoerceUnsized<std::rc::Rc<dyn Foo>>` for `std::rc::Rc<usize>` |
| = note: required by cast to type `std::rc::Rc<dyn Foo>` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0038`. |