error: unnecessary parentheses around `match` scrutinee expression --> $DIR/lint-struct-necessary.rs:15:11 | LL | match (e) { | ^ ^ | note: the lint level is defined here --> $DIR/lint-struct-necessary.rs:2:9 | LL | #![deny(unused_parens)] | ^^^^^^^^^^^^^ help: remove these parentheses | LL - match (e) { LL + match e { | error: aborting due to 1 previous error