Closes#12803 (std: Relax an assertion in oneshot selection) r=brson
Closes#12818 (green: Fix a scheduler assertion on yielding) r=brson
Closes#12819 (doc: discuss try! in std::io) r=alexcrichton
Closes#12820 (Use generic impls for `Hash`) r=alexcrichton
Closes#12826 (Remove remaining nolink usages) r=alexcrichton
Closes#12835 (Emacs: always jump the cursor if needed on indent) r=brson
Closes#12838 (Json method cleanup) r=alexcrichton
Closes#12843 (rustdoc: whitelist the headers that get a § on hover) r=alexcrichton
Closes#12844 (docs: add two unlisted libraries to the index page) r=pnkfelix
Closes#12846 (Added a test that checks that unary structs can be mutably borrowed) r=sfackler
Closes#12847 (mk: Fix warnings about duplicated rules) r=nmatsakis
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