| error[E0038]: the trait `Foo` is not dyn compatible |
| --> $DIR/issue-38604.rs:14:21 |
| | |
| LL | let _f: Box<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 <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility> |
| --> $DIR/issue-38604.rs:2:22 |
| | |
| LL | trait Foo where u32: Q<Self> { |
| | --- ^^^^^^^ ...because it uses `Self` as a type parameter |
| | | |
| | this trait is not dyn compatible... |
| = help: only type `()` implements `Foo`; consider using it directly instead. |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0038`. |
