It's a ~1% win on `keccak` and `inflate`.

This typo was introduced in rust-lang#47334.
A couple tests bitrotted as a result, so we fix those too, and move them
to a more sensible place.

…n rustc.

…q-example, r=QuietMisdreavus

Add another PartialEq example

r? @steveklabnik

…omez

Add example for Cow

Add one more example that shows how to keep `Cow` in a struct.

Link to playground: https://play.rust-lang.org/?gist=a9256bdd034b44bc3cdd0044bbcdbb7c&version=stable&mode=debug&edition=2015

Users ask this question in [ruRust](https://gitter.im/ruRust/general) chat time to time and it is not obvious to add `ToOwned<Owned=Target>` to requirements of generic params.

…, r=pnkfelix

remove `let x = baz` which was obscuring the real error

fixes rust-lang#51172

document effect of join on memory ordering

Fixes rust-lang#45467

Use FxHash{Map,Set} instead of the default Hash{Map,Set} everywhere in rustc.

Most of the compiler uses the `Fx` hasher but some places ended up with the default one.

… r=varkor

Force-inline `shallow_resolve` at its hottest call site.

It's a ~1% win on `keccak` and `inflate`.

cleanup: Add main functions to some UI tests

set applicability

Update a few more calls as described in rust-lang#50723

r? @estebank

…o_vis_matcher, r=cramertj

Fix stabilisation version for macro_vis_matcher.

r? @cramertj

…, r=nikomatsakis

Do not suggest dereferencing in macro

Fix rust-lang#52783.

save-analysis: Differentiate foreign functions and statics.

fix a typo: taget_env -> target_env

This typo was introduced in rust-lang#47334. A couple tests bitrotted as a result, so we fix those too, and move them to a more sensible place.

Is there some lint we could turn on that would've caught this? It's a drag that cfg typos can silently pass through the compiler.

…etMisdreavus

Rustdoc fixes

Fixes rustdoc not scrolling to given lines and invalid unstable display:

<img width="1440" alt="screen shot 2018-08-27 at 23 28 47" src="https://user-images.githubusercontent.com/3050060/44687252-06535e80-aa51-11e8-8512-d7d34d1cb963.png">

r? @QuietMisdreavus

expand keep-stage --help text

Update clippy submodule

r? @Manishearth @nrc @kennytm