title: Xcode 6 Beta Toolchain Error
body: <p>I am trying to compile an some code of an app I am currently working on and run it on an iPhone, but every time I run it, the build fails and this is the error:</p>
  
  <pre><code>/Applications/Xcode6-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-stdlib-tool failed with exit code 1
  </code></pre>
  
  <p>It was working perfectly two days ago, I have no idea how to fix it.</p>