1 error: cannot specialize on `Binder(ProjectionPredicate(ProjectionTy { substs: [V], item_def_id: DefId(0:6 ~ repeated_projection_type[b09c]::Id::This) }, (I,)), [])`
2 --> $DIR/repeated_projection_type.rs:19:1
4 LL | / impl<I, V: Id<This = (I,)>> X for V {
10 error: aborting due to previous error