There's an assert in hal/gonk/UeventPoller.cpp:143 (landed in bug 742226) that uses a ScopedClose with .mFd member instead of .get(). This causes gecko to not compile in debug mode.
This didn't burn any trees because we only compile release B2g on try currently. :( :( :(
Created attachment 617109 [details] [diff] [review]
Change .mFd to .get() in Uevent poller assert