I try to publish on AppStore an App that contains Swift 2.0 files, but I receive the following email:
Dear developer,
We have discovered one o
To be safe, all components of your app should be built with the same version of Xcode and the Swift compiler to ensure that they work together.
I think you need to do a pod clean and install. I reckon one of your swift pods was created on a old version of Xcode, you updated Xcode and then tried to do a submission to the app store.
Read the apple swift blog about binary compatibility and frameworks
You will also want to specify that your embedded content contains swift in the build settings:
EMBEDDED_CONTENT_CONTAINS_SWIFT
Enable this setting to indicate that content embedded in a target's product contains Swift code, so that the standard Swift libraries can be included in the product.