error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
  --> $DIR/issue-67830.rs:20:64
   |
LL | fn test() -> impl for<'a> MyFn<&'a A, Output = impl Iterator + 'a> {
   |                                                                ^^
   |
note: lifetime declared here
  --> $DIR/issue-67830.rs:20:23
   |
LL | fn test() -> impl for<'a> MyFn<&'a A, Output = impl Iterator + 'a> {
   |                       ^^

error: aborting due to 1 previous error

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