error: unknown derive in `bitfields!`. Refer to the documentation for the list of supported derives
 --> $DIR/unknown_derive.rs:4:14
  |
4 |     #[derive(Foo, serde::Serialize)]
  |              ^^^

error: unknown derive in `bitfields!`. Refer to the documentation for the list of supported derives
 --> $DIR/unknown_derive.rs:4:19
  |
4 |     #[derive(Foo, serde::Serialize)]
  |                   ^^^^^^^^^^^^^^^^

error: unknown derive in `bitfields!`. Refer to the documentation for the list of supported derives
 --> $DIR/unknown_derive.rs:5:14
  |
5 |     #[derive(serde::Deserialize, Debug)]
  |              ^^^^^^^^^^^^^^^^^^

error: unknown derive in `bitfields!`. Refer to the documentation for the list of supported derives
 --> $DIR/unknown_derive.rs:6:14
  |
6 |     #[derive(BitFieldCompatible)]
  |              ^^^^^^^^^^^^^^^^^^