src/test/ui/never_type/feature-gate-never_type_fallback.stderr

error[E0277]: the trait bound `(): T` is not satisfied
  --> $DIR/feature-gate-never_type_fallback.rs:9:25
   |
LL | fn should_ret_unit() -> impl T {
   |                         ^^^^^^ the trait `T` is not implemented for `()`
   |
   = note: the return type of a function must have a statically known size

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.