src/test/ui/impl-trait/object-unsafe-trait-in-return-position-impl-trait.stderr

error[E0308]: mismatched types
  --> $DIR/object-unsafe-trait-in-return-position-impl-trait.rs:36:5
   |
LL | fn can() -> impl NotObjectSafe {
   |             ------------------ expected because this return type...
LL |     if true {
LL |         return A;
   |                - ...is found to be `A` here
LL |     }
LL |     B
   |     ^ expected struct `A`, found struct `B`
   |
   = note: to return `impl Trait`, all returned values must be of the same type
   = note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
   = help: if the trait `NotObjectSafe` were object safe, you could return a boxed trait object
   = note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
   = help: you could instead create a new `enum` with a variant for each returned type

error[E0308]: mismatched types
  --> $DIR/object-unsafe-trait-in-return-position-impl-trait.rs:43:5
   |
LL | fn cat() -> impl ObjectSafe {
   |             --------------- expected because this return type...
LL |     if true {
LL |         return A;
   |                - ...is found to be `A` here
LL |     }
LL |     B
   |     ^ expected struct `A`, found struct `B`
   |
   = note: to return `impl Trait`, all returned values must be of the same type
   = note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits>
   = note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types>
   = help: you could instead create a new `enum` with a variant for each returned type
help: you could change the return type to be a boxed trait object
   |
LL | fn cat() -> Box<dyn ObjectSafe> {
   |             ^^^^^^^           ^
help: if you change the return type to expect trait objects, box the returned expressions
   |
LL |         return Box::new(A);
LL |     }
LL |     Box::new(B)
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.