title: Xcode 8 Stuck at Indexing and uses up all free space in the storage
body: <p>I am a Unreal C++ Developer and I'm using Xcode as my primary editor for my Unreal projects. Everything was fine with Xcode 7.3.1. Yesterday, I upgraded Xcode from 7.3.1 to 8.0. While opening Unreal Projects in Xcode 8, Xcode freezes at Indexing and also free space on Macintosh SSD is used up drastically by Xcode or whatever(I don't know since the SSD space is completely used up hence I can't even close any running applications. It just freezes). I tried,</p>
  
  <ul>
  <li>Deleting everything in "Derived Cache/" folder and rebooting Mac</li>
  <li>Re generating Xcode project from Unreal Editor</li>
  <li>Emptying out build folder and started rebuilding from scratch.</li>
  <li>Re installing Xcode 8</li>
  </ul>
  
  <blockquote>
    <p>Please note that it is not the problem of low space or out of memory.</p>
  </blockquote>
  
  <p>Because I've more than 100 GB free and 8 GB RAM. But the problem is the free space is used up so fast like several GB's per second! I can't even imagine Xcode or my SSD will have write speed like that. And it is specifically for Unreal Projects alone.</p>
  
  <p>But nothing seems to work out. Any help would be appreciated.</p>