Rollup of 6 pull requests#51310

Merged

bors merged 18 commits intorust-lang:masterfrom

Mark-Simulacrum:rollup

Jun 3, 2018

Commits on Apr 24, 2018

Issue number should be for tracking issue not PR
fintelia
authored

Commits on May 19, 2018

Add as_micros and as_millis methods
fintelia
committed

Commits on May 28, 2018

Commits on Jun 1, 2018

Stabilize SliceIndex trait.
tmccombs
committed

Commits on Jun 2, 2018