tests/ui/type-alias-impl-trait/issue-98608.stderr

   1 error[E0271]: expected `fn() -> impl Sized {hi}` to be a fn item that returns `Box<u8>`, but it returns `impl Sized`
   2   --> $DIR/issue-98608.rs:6:39
   3    |
   4 LL | fn hi() -> impl Sized {
   5    |            ---------- the found opaque type
   6 ...
   7 LL |     let b: Box<dyn Fn() -> Box<u8>> = Box::new(hi);
   8    |                                       ^^^^^^^^^^^^ expected struct `Box`, found opaque type
   9    |
  10    = note:   expected struct `Box<u8>`
  11            found opaque type `impl Sized`
  12    = note: required for the cast from `fn() -> impl Sized {hi}` to the object type `dyn Fn() -> Box<u8>`
  13
  14 error: aborting due to previous error
  15
  16 For more information about this error, try `rustc --explain E0271`.