From 75674d1ba1bbd09a2008f867b3a88ee018a00f93 Mon Sep 17 00:00:00 2001
From: Robert Nishihara <robertnishihara@gmail.com>
Date: Thu, 23 Jun 2016 23:47:23 -0700
Subject: [PATCH] don't allow failures on os x (#154)