| 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:21:6 | |
| | | |
| LL | impl<'a> Fun for Holder { //~ ERROR E0207 | |
| | ^^ unconstrained lifetime parameter | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0207`. |