rustdoc shows the anonymous lifetime in the foreign implementations section of re-exported traits

[Nemo157]

Compare the docs for futures_core::stream::Stream vs futures::stream::Stream which is just a re-export of the former. In the original docs the anonymous lifetime on the impl<T: Stream + Unpin> Stream for &mut T is not shown, in either the sidebar or main docs

While in the re-exported docs, the anonymous lifetime is shown in both locations

(along with some other differences that probably deserve separate issues)

Reproduced locally on rustdoc 1.53.0-nightly (968425893 2021-04-26)