| error[E0220]: associated type `Res` not found for `Self` | |
| --> $DIR/issue-59029-1.rs:5:52 | |
| | | |
| LL | trait MkSvc<Target, Req> = Svc<Target> where Self::Res: Svc<Req>; | |
| | ^^^ associated type `Res` not found | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0220`. |