| error[E0038]: the trait `X` cannot be made into an object |
| --> $DIR/bounds.rs:7:15 |
| | |
| LL | fn f() -> Box<dyn X<U = u32>> { |
| | ^^^^^^^^^^^^^^ `X` cannot be made into an object |
| | |
| note: for a trait to be "dyn-compatible" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> |
| --> $DIR/bounds.rs:4:13 |
| | |
| LL | trait X { |
| | - this trait cannot be made into an object... |
| LL | type U: PartialEq<Self>; |
| | ^^^^^^^^^^^^^^^ ...because it uses `Self` as a type parameter |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0038`. |
