Make sure to clear out the stageN-{rustc,std,tools} directories.#44792

Merged

bors merged 2 commits intorust-lang:masterfrom Mark-Simulacrum:correct-deps

Oct 20, 2017

+132-79

Commits on Oct 18, 2017

Make sure to clear out the stageN-{rustc,std,tools} directories.
Mark-Simulacrum
committed

Commits on Oct 19, 2017

Make tools which may not build return Option.
Mark-Simulacrum
committed