error[E0531]: cannot find tuple struct/variant `a` in this scope --> $DIR/enums-pats-not-idents.rs:2:9 | LL | let a(1) = 13; //~ ERROR cannot find tuple struct/variant `a` in this scope | ^ not found in this scope error: aborting due to previous error For more information about this error, try `rustc --explain E0531`.