warning: the feature `type_alias_impl_trait` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/different_defining_uses_never_type.rs:3:32
   |
LL | #![cfg_attr(full_tait, feature(type_alias_impl_trait))]
   |                                ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(incomplete_features)]` on by default
   = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information

error: concrete type differs from previous defining opaque type use
  --> $DIR/different_defining_uses_never_type.rs:15:1
   |
LL | fn bar() -> Foo {
   | ^^^^^^^^^^^^^^^ expected `&'static str`, got `()`
   |
note: previous use here
  --> $DIR/different_defining_uses_never_type.rs:11:1
   |
LL | fn foo() -> Foo {
   | ^^^^^^^^^^^^^^^

error: concrete type differs from previous defining opaque type use
  --> $DIR/different_defining_uses_never_type.rs:19:1
   |
LL | fn boo() -> Foo {
   | ^^^^^^^^^^^^^^^ expected `&'static str`, got `()`
   |
note: previous use here
  --> $DIR/different_defining_uses_never_type.rs:11:1
   |
LL | fn foo() -> Foo {
   | ^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors; 1 warning emitted