rust/tests/ui/type-alias-impl-trait/hidden_behind_projection_be...

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error[E0308]: mismatched types
--> $DIR/hidden_behind_projection_behind_struct_field.rs:19:22
|
LL | type Assoc = impl std::fmt::Debug;
| -------------------- the expected opaque type
LL | fn foo() -> Foo<Bar> {
LL | Foo { field: () }
| ^^ expected opaque type, found `()`
|
= note: expected opaque type `<Bar as Trait>::Assoc`
found unit type `()`
note: this item must have the opaque type in its signature in order to be able to register hidden types
--> $DIR/hidden_behind_projection_behind_struct_field.rs:18:8
|
LL | fn foo() -> Foo<Bar> {
| ^^^
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0308`.