error[E0317]: `if` may be missing an `else` clause --> $DIR/issue-19991.rs:5:5 | LL | / if let Some(homura) = Some("madoka") { LL | | LL | | 765 | | --- found here LL | | }; | |_____^ expected `()`, found integer | = note: `if` expressions without `else` evaluate to `()` = help: consider adding an `else` block that evaluates to the expected type error: aborting due to previous error For more information about this error, try `rustc --explain E0317`.