title: SourceKitService Consumes CPU and Grinds Xcode to a Halt
body: <p>This is NOT a Beta issue.  I am on Xcode 6.0.1, production release. The issue I am having is that when I try to do a Build or Run the code I am working on, Xcode becomes unresponsive for large periods of time and the SourceKitService consumes upwards of 400% of the CPU (according to Activity Monitor).  This issue is new as of the last few days, although, oddly, I had been on Xcode 6.0 since it was officially released on Sept 17.  I upgraded to 6.0.1 hoping it would contain a fix for this issue.</p>
  
  <p>Any idea as to what the problem could be?</p>