error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
  --> $DIR/issue-67830.rs:21:62
   |
LL | fn test() -> impl for<'a> MyFn<&'a A, Output=impl Iterator + 'a> {
   |                                                              ^^
   |
note: lifetime declared here
  --> $DIR/issue-67830.rs:21:23
   |
LL | fn test() -> impl for<'a> MyFn<&'a A, Output=impl Iterator + 'a> {
   |                       ^^

error: implementation of `FnOnce` is not general enough
  --> $DIR/issue-67830.rs:23:5
   |
LL |     Wrap(|a| Some(a).into_iter())
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
   |
   = note: closure with signature `fn(&'2 A) -> std::option::IntoIter<&A>` must implement `FnOnce<(&'1 A,)>`, for any lifetime `'1`...
   = note: ...but it actually implements `FnOnce<(&'2 A,)>`, for some specific lifetime `'2`

error: implementation of `FnOnce` is not general enough
  --> $DIR/issue-67830.rs:23:5
   |
LL |     Wrap(|a| Some(a).into_iter())
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
   |
   = note: closure with signature `fn(&'2 A) -> std::option::IntoIter<&A>` must implement `FnOnce<(&'1 A,)>`, for any lifetime `'1`...
   = note: ...but it actually implements `FnOnce<(&'2 A,)>`, for some specific lifetime `'2`
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0657`.