src/test/ui/typeck/issue-100246.stderr

   1 error[E0308]: `?` operator has incompatible types
   2   --> $DIR/issue-100246.rs:28:24
   3    |
   4 LL |     let other: Other = downcast()?;
   5    |                        ^^^^^^^^^^^ expected struct `Other`, found reference
   6    |
   7    = note: `?` operator cannot convert from `&_` to `Other`
   8    = note: expected struct `Other`
   9            found reference `&_`
  10
  11 error: aborting due to previous error
  12
  13 For more information about this error, try `rustc --explain E0308`.