error: `rename_all_fields` requires the enum to have at least one struct variant
 --> tests/config/fail/rename_all_fields_on_enum_without_struct_variants.rs:3:5
  |
3 | pub enum FieldlessOnly {
  |     ^^^^

error: `rename_all_fields` requires the enum to have at least one struct variant
  --> tests/config/fail/rename_all_fields_on_enum_without_struct_variants.rs:11:5
   |
11 | pub enum TupleOnly {
   |     ^^^^
