Blanket trait impls are not listed as implementations in rustdoc

[bluss]

ToString has the implementation impl<T: fmt::Display + ?Sized> ToString for T which is not listed in its documentation page.

It is however listed in libstd, so rustdoc does the correct thing after doc inlining.

This bug with blanket impls shows up in user's crates, see discussion on users.rust-lang; for example the Itertools trait in itertools does not have its blanket impl visible in the docs.

[pmarcelll]

It regressed on nightly, it also disappeard from the libstd page.

[jethrogb]

The regression is not due to specialization, see e.g. https://doc.rust-lang.org/stable/std/any/trait.Any.html vs https://doc.rust-lang.org/nightly/std/any/trait.Any.html which does not use specialization. Regression is also visible on beta btw.

[flying-sheep]

hmm, is this bug affecting me? my docs, corresponding src

[bluss]

@flying-sheep Yes, it's the same bug.

[flying-sheep]

thanks. a bit confusing, since that impl is the whole point of my crate 😄