1 A stability attribute has been used outside of the standard library.
3 Erroneous code examples:
6 #[rustc_deprecated(since = "b", reason = "text")] // invalid
7 #[stable(feature = "a", since = "b")] // invalid
8 #[unstable(feature = "b", issue = "0")] // invalid
12 These attributes are meant to only be used by the standard library and are
13 rejected in your own crates.