title: Xcode 6.4 hangs with "Timed out waiting to acquire lock file for module 'AVFoundation'" for Release configuration
body: <p>While Debug configurations work for my project (Objective-C, OSX), Release configuration always hangs at the same place with the same message <code>Timed out waiting to acquire lock file for module 'AVFoundation'</code> pointing to my .m file which imports <code>AVFoundation</code> framework. 
  Seems a rare bug as googling for it doesn't help a lot. <a href="https://stackoverflow.com/questions/29825180/xcode-6-3-1-error-timed-out-waiting-to-acquire-lock-file-for-module-x-where">Similar problem</a> concerns Swift, thus it's not applicable for my case.</p>