missing impls in std::str::Pattern docs #33113
Description
Some of the impls of Pattern disappeared from the std docs starting in beta. Compare:
- http://doc.rust-lang.org/std/str/pattern/trait.Pattern.html (stable docs, impls shown)
- http://doc.rust-lang.org/nightly/std/str/pattern/trait.Pattern.html (nightly docs, impls missing)
They are also missing from the stable (and nightly) docs of core.