src/test/ui/type-alias-impl-trait/nested-tait-inference2.stderr

   1 error[E0277]: the trait bound `(): Foo<FooX>` is not satisfied
   2   --> $DIR/nested-tait-inference2.rs:13:13
   3    |
   4 LL | fn foo() -> impl Foo<FooX> {
   5    |             ^^^^^^^^^^^^^^ the trait `Foo<FooX>` is not implemented for `()`
   6 LL |
   7 LL |     ()
   8    |     -- return type was inferred to be `()` here
   9    |
  10    = help: the following other types implement trait `Foo<A>`:
  11              <() as Foo<()>>
  12              <() as Foo<u32>>
  13
  14 error: aborting due to previous error
  15
  16 For more information about this error, try `rustc --explain E0277`.