| error[E0038]: the trait alias `BB` cannot be made into an object | |
| --> $DIR/self-in-const-generics.rs:9:16 | |
| | | |
| LL | fn foo(x: &dyn BB) {} | |
| | ^^ | |
| | | |
| = note: it cannot use `Self` as a type parameter in a supertrait or `where`-clause | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0038`. |