error[E0308]: `if` and `else` have incompatible types --> $DIR/issue-101065.rs:12:9 | LL | let _x = if true { | ______________- LL | | FakeResult::Ok(FakeResult::Ok(())) | | ---------------------------------- expected because of this LL | | } else { LL | | FakeResult::Ok(()) | | ^^^^^^^^^^^^^^^^^^ expected enum `FakeResult`, found `()` LL | | }; | |_____- `if` and `else` have incompatible types | = note: expected enum `FakeResult>` found enum `FakeResult<()>` help: try wrapping the expression in `FakeResult::Ok` | LL | FakeResult::Ok(FakeResult::Ok(())) | +++++++++++++++ + error: aborting due to previous error For more information about this error, try `rustc --explain E0308`.