error: `from_word` cannot be used on unit structs because it conflicts with the generated impl
 --> tests/compile-fail/from_word.rs:7:23
  |
7 | #[darling(from_word = || Ok(Unit))]
  |                       ^

error: `from_word` cannot be used on newtype structs because the implementation is entirely delegated to the inner type
  --> tests/compile-fail/from_word.rs:17:23
   |
17 | #[darling(from_word = newtype_from_word)]
   |                       ^^^^^^^^^^^^^^^^^

error: `from_word` cannot be used with an enum that also uses `word`
  --> tests/compile-fail/from_word.rs:21:23
   |
21 | #[darling(from_word = || Ok(Wordy::Options { thing: "Hello".to_string() }))]
   |                       ^