error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let` --> $DIR/single_match_else.rs:21:5 | LL | / match ExprNode::Butterflies { LL | | ExprNode::ExprAddrOf => Some(&NODE), LL | | _ => { LL | | let x = 5; LL | | None LL | | }, LL | | } | |_____^ | = note: `-D clippy::single-match-else` implied by `-D warnings` help: try this | LL | if let ExprNode::ExprAddrOf = ExprNode::Butterflies { Some(&NODE) } else { LL | let x = 5; LL | None LL | } | error: aborting due to previous error