| error[E0038]: the trait `B` cannot be made into an object | |
| --> $DIR/issue-38404.rs:3:15 | |
| | | |
| LL | trait C<T>: A<dyn B<T, Output=usize>> {} | |
| | ^^^^^^^^^^^^^^^^^^^^^^ the trait `B` cannot be made into an object | |
| | | |
| = note: the trait cannot use `Self` as a type parameter in the supertraits or where-clauses | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0038`. |