title: Command /Xcode.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/bin/swiftc failed with exit code 1
body: <p>When I build with Xcode 8.2.1 I received this error:</p>
  
  <p><a href="https://i.stack.imgur.com/44Ood.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/44Ood.png" alt="enter image description here"></a></p>
  
  <blockquote>
    <p>Command /Volumes/SSD/Xcode.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/bin/swiftc failed with exit code 1</p>
  </blockquote>
  
  <p>I have cleaned the project, delete derived data, wait for the indexing processing files, close and reopen Xcode, restart computer and nothing.</p>
  
  <p>There is no duplicated files.</p>
  
  <p>Same error happens with other libraries not only Alamofire.</p>
  
  <p>The error begin happening after merge a branch. Keeping in mind that, I have tried go to other old branch where it used to work but it doesn't work anymore, same error.</p>
  
  <p>Any other required information let me know!</p>
  
  <p>Thank you so much.</p>