Podspec fails to pass validation, but no ERROR logged

Recently I had this problem and adding --allow-warnings fixes the issue.

pod spec lint MyProject.podspec --allow-warnings

Ok. Got my answer from the Cocoapods guys. Podspec validation fails on all errors and warnings. Failing on warnings doesn't mean the project fails as a Pod. Turns out I can simply ignore the warning.

As for AFNetworking, the issue has been resolved with version 2.0.