error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates
--> $DIR/impl-unused-rps-in-assoc-type.rs:11:6
|
-LL | impl<'a> Fun for Holder { //~ ERROR E0207
+LL | impl<'a> Fun for Holder {
| ^^ unconstrained lifetime parameter
error: aborting due to previous error