error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
  --> $DIR/issue-88236.rs:15:61
   |
LL | fn make_impl() -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {}
   |                                                             ^^
   |
note: lifetime declared here
  --> $DIR/issue-88236.rs:15:28
   |
LL | fn make_impl() -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {}
   |                            ^^

error: aborting due to 1 previous error

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