error[E0631]: type mismatch in function arguments
  --> $DIR/issue-60283.rs:14:5
   |
LL |     foo((), drop)
   |     ^^^
   |     |
   |     expected signature of `for<'a> fn(<() as Trait<'a>>::Item) -> _`
   |     found signature of `fn(_) -> _`
   |
note: required by `foo`
  --> $DIR/issue-60283.rs:9:1
   |
LL | / pub fn foo<T, F>(_: T, _: F)
LL | | where T: for<'a> Trait<'a>,
LL | |       F: for<'a> FnMut(<T as Trait<'a>>::Item) {}
   | |_________________________________________________^

error[E0271]: type mismatch resolving `for<'a> <fn(_) {std::mem::drop::<_>} as std::ops::FnOnce<(<() as Trait<'a>>::Item,)>>::Output == ()`
  --> $DIR/issue-60283.rs:14:5
   |
LL |     foo((), drop)
   |     ^^^ expected bound lifetime parameter 'a, found concrete lifetime
   |
note: required by `foo`
  --> $DIR/issue-60283.rs:9:1
   |
LL | / pub fn foo<T, F>(_: T, _: F)
LL | | where T: for<'a> Trait<'a>,
LL | |       F: for<'a> FnMut(<T as Trait<'a>>::Item) {}
   | |_________________________________________________^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0271`.