error: conditional `else if` is not supported for `let...else` --> $DIR/let-else-if.rs:4:33 | LL | let Some(_) = Some(()) else if true { | ^^ expected `{` | help: try placing this code inside a block | LL ~ let Some(_) = Some(()) else { if true { LL | ... LL | return; LL ~ } }; | error: aborting due to previous error