Rollup of 6 pull requests#42022

Closed

frewsxcv wants to merge 18 commits intorust-lang:masterfrom

frewsxcv:rollup

Commits on May 11, 2017

Add Vec::resize_default.
Clar Charr
committed

Commits on May 14, 2017

librustc_incremental: remove unused macro in test case
est31
committed
Explain why `thread::yield_now` could be used.
Felix Raimundo
committed
Improve `thread::Builder` documentation.
Felix Raimundo
committed

Commits on May 15, 2017

Make unsatisfied trait bounds note multiline
estebank
committed
Address review comments
est31
committed
Add links to the `thread::LocalKey` doc.
Felix Raimundo
committed

Commits on May 16, 2017