src/test/ui/regions/regions-trait-object-subtyping.nll.stderr

   1 error: lifetime may not live long enough
   2   --> $DIR/regions-trait-object-subtyping.rs:15:5
   3    |
   4 LL | fn foo3<'a,'b>(x: &'a mut Dummy) -> &'b mut Dummy {
   5    |         -- -- lifetime `'b` defined here
   6    |         |
   7    |         lifetime `'a` defined here
   8 LL |     // Without knowing 'a:'b, we can't coerce
   9 LL |     x
  10    |     ^ returning this value requires that `'a` must outlive `'b`
  11
  12 error: lifetime may not live long enough
  13   --> $DIR/regions-trait-object-subtyping.rs:22:5
  14    |
  15 LL | fn foo4<'a:'b,'b>(x: Wrapper<&'a mut Dummy>) -> Wrapper<&'b mut Dummy> {
  16    |         --    -- lifetime `'b` defined here
  17    |         |
  18    |         lifetime `'a` defined here
  19 LL |     // We can't coerce because it is packed in `Wrapper`
  20 LL |     x
  21    |     ^ returning this value requires that `'b` must outlive `'a`
  22
  23 error: aborting due to 2 previous errors
  24