error: `num_enum` only supports unit variants (with no associated data), but `Number::NonZero` was not a unit variant.
 --> $DIR/variants_with_fields.rs:7:5
  |
7 |     NonZero(u8),
  |     ^^^^^^^^^^^

error: `num_enum` only supports unit variants (with no associated data), but `Colour::Red` was not a unit variant.
  --> $DIR/variants_with_fields.rs:13:5
   |
13 |     Red { intensity: u8 },
   |     ^^^^^^^^^^^^^^^^^^^^^

error: `num_enum` only supports unit variants (with no associated data), but `Meaningless::Beep` was not a unit variant.
  --> $DIR/variants_with_fields.rs:19:5
   |
19 |     Beep(),
   |     ^^^^^^