title: Xcode project build canceled
body: <p>I have a project that I have been using to learn Xcode/swift/IOS programming. For some time I have testing it  in the simulators as well as on my iPhone 5. Now, all of a sudden it is not possible to install on my iPhone. The reaches "Copying standard swift libraries" and then: "Build canceled". No further information whatsoever. Still runs fine in the simulator. I am using Xcode 7.3/swift 2.2 and IOS 9.3. Also using the Xcode 7 free ad-hoc provisioning.</p>