error[E0597]: `hs2` does not live long enough
  --> $DIR/handle_scope_lifetime_4.rs:11:5
   |
11 |     hs2.enter()
   |     ^^^--------
   |     |
   |     borrowed value does not live long enough
   |     borrow later used here
12 |   };
   |   - `hs2` dropped here while still borrowed