error: custom attribute panicked
 --> $DIR/unknown_de_casing.rs:6:1
  |
6 | #[serde_alias(camelCase)]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: message: unknown casing: camelCase try one of ["PascalCase", "CamelCase", "LowerCase", "UpperCase", "SnakeCase", "ScreamingSnakeCase", "KebabCase", "ScreamingKebabCase"]