For example, `impl BitOr<NonZeroU128> for NonZeroU128` being stable since 1.45.0 is visible [on the page for `NonZeroU128`](https://doc.rust-lang.org/core/num/struct.NonZeroU128.html#impl-BitOr%3CNonZeroU128%3E):  but not [on the page for `BitOr`](https://doc.rust-lang.org/core/ops/trait.BitOr.html#impl-BitOr%3CNonZeroU128%3E):  (also the latter doesn't have `BitOr` linkified while the former has `NonZeroU128` linkified, but self-links seem less important)