Duplicate files in DerivedData folder using CoreData generator : <p>I'm trying to generate NSManagedModels from my datamodel. Generation works but after I got many errors :</p>

<blockquote>
  <p>error: filename "Station+CoreDataProperties.swift" used twice:
  '/Users/Me/MyApp/Models/CoreData/Station+CoreDataProperties.swift' and
  '/Users/Me/Library/Developer/Xcode/DerivedData/MyApp-gwacspwrsnabomertjnqfbuhjvwc/Build/Intermediates/MyApp.build/Debug-iphoneos/MyApp.build/DerivedSources/CoreDataGenerated/Model/Station+CoreDataProperties.swift'
  :0: note: filenames are used to distinguish private
  declarations with the same name</p>
</blockquote>

<p>I try clean build folder and derivedData directory hard delete. I'm using Xcode 8 BETA maybe it's a bug ?</p>
