Invalid Swift support

"The bundle contains an invalid implementation of Swift. The app may have been built or signed with non-compliant or pre-release tools. Visit developer.apple.com for more information."

Occurs when I submit to iTunes Connect from XCode 5.1.1 or the Application Loader. My app uses Swift and some Objective C libraries. I've tried switching the embedded Swift build rule, making a new project, and making a new app in iTunes Connect.

Invalid Swift support
 
 
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