error[E0731]: transparent enum needs exactly one variant, but has 2 --> $DIR/transparent-enum-too-many-variants.rs:4:1 | LL | enum Foo { | ^^^^^^^^ needs exactly one variant, but has 2 LL | A(u8), B(u8), | - - too many variants in `Foo` | | | variant here error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0731`.