error[E0582]: binding for associated type `Output` references lifetime `'a`, which does not appear in the trait input types
  --> $DIR/E0582.rs:28:30
   |
LL |     where F: for<'a> Fn() -> Option<&'a i32>
   |                              ^^^^^^^^^^^^^^^

error[E0582]: binding for associated type `Item` references lifetime `'a`, which does not appear in the trait input types
  --> $DIR/E0582.rs:36:31
   |
LL |     where F: for<'a> Iterator<Item=&'a i32>
   |                               ^^^^^^^^^^^^

error[E0308]: mismatched types
  --> $DIR/E0582.rs:22:5
   |
LL |     bar(mk_unexpected_char_err)
   |     ^^^ one type is more general than the other
   |
   = note: expected enum `Option<&_>`
              found enum `Option<&'a _>`
note: the lifetime requirement is introduced here
  --> $DIR/E0582.rs:28:30
   |
LL |     where F: for<'a> Fn() -> Option<&'a i32>
   |                              ^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0308, E0582.
For more information about an error, try `rustc --explain E0308`.