error: lifetime may not live long enough
 --> $DIR/compile_error.rs:5:5
  |
4 | fn testlt<'a, 'b>(any: &'a dyn Any) -> &'b i32 {
  |           --  -- lifetime `'b` defined here
  |           |
  |           lifetime `'a` defined here
5 |     downcast_any(any).unwrap()
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
  |
  = help: consider adding the following bound: `'a: 'b`