Cherry-picking PR 24553 into [beta]#24941

Closed

pnkfelix wants to merge 2 commits intorust-lang:betafrom pnkfelix:beta-cherrypick

+447-234

Commits on Apr 29, 2015

Rather than storing the relations between free-regions in a global

nikomatsakis
authored and
pnkfelix
committed
fix rustc_driver tests

nikomatsakis
authored and
pnkfelix
committed