title: Swift stdlib tool Error -> Task failed with exit 1 signal - IOS
body: <p>I am trying to launch my developed app on my iphone and I am getting a build fail with the following error.  I do not know how to address the problem.  Please can someone advise?  I can build the app on the simulator but not on the iphone.</p>
  
  <pre><code> error: Task failed with exit 1 signal 0 {
  /usr/bin/codesign '--force' '--sign' 'CF34DF6AAC83D040CB9CA5907F171518DB7A331F' '--verbose' '/Users/johnDow/Library/Developer/Xcode/DerivedData/myApp-dfuggtbkfdkixtemtcsnzflclljy/Build/Products/Debug-iphoneos/myApp.app/Frameworks/libswiftCore.dylib'
  }
  </code></pre>