error: Unknown argument `magic`, expected one of: `aliases`, `item`, `name`, `param_kind`, `unsubscribe`, `unsubscribe_aliases`, `with_extensions`
 --> tests/ui/incorrect/sub/sub_unsupported_field.rs:6:65
  |
6 |     #[subscription(name = "sub", unsubscribe = "unsub", item = u8, magic = true)]
  |                                                                    ^^^^^