Rollup of 8 pull requests#37830

Closed

GuillaumeGomez wants to merge 19 commits intorust-lang:masterfrom

GuillaumeGomez:rollup

Commits on Nov 13, 2016

Commits on Nov 14, 2016

Add semicolon to "perhaps add a `use` for one of them" help
robinst
committed
Add sections about concurrency and stdout/err capture to the Testing chapter of the book.
Steve Smith
committed
Typo in new section
Steve Smith
committed
Remove thread-per-CPU bit as it may not be accurate.
Steve Smith
committed
add test for #37765
durka
authored

Commits on Nov 16, 2016

Commits on Nov 17, 2016