title: Fastlane (Gym) Mysteriously Seg Faults after Installing Fabric/Crashlytics
body: <p>I'm working on a React Native iOS app. I've setup Fastlane, which has worked fine, building and uploading my app to iTunes connect. However upon installing Fabric/Crashlytics my Fastlane script fails on Gym. XCode still is able to build my app successfully. I've followed the Mac client instructions for setting up Fabric.</p>
  
  <p>Fastlane version: 1.101.0
  XCode version: 7.2.1
  ReactNative version: 0.31.0</p>
  
  <p>I have cleaned all my build artifacts since installing Fabric. I've been searching for a solution for several days, but to no avail. Any help would be much appreciated!</p>
  
  <p><a href="http://i.stack.imgur.com/MAr1O.png" rel="nofollow">Output after running <code>fastlane beta</code> (fails on Gym)</a></p>
  
  <p><a href="http://i.stack.imgur.com/L27rn.png" rel="nofollow">My Fastfile</a></p>