error: associated lifetimes are not supported
  --> $DIR/recover-assoc-lifetime-constraint.rs:3:11
   |
LL |     bar::<Item = 'a>();
   |           ^^^^^^^--
   |                  |
   |                  the lifetime is given here
   |
   = help: if you meant to specify a trait object, write `dyn Trait + 'lifetime`

error: aborting due to 1 previous error