Ever since upgrading to Xcode 8 using Swift 2.3 I have several missing files warnings. They are all related to pods that I am using.
The files that are missing are
In my case Pods where checked into the repository generating a couple hundred warnings for "missing files". Fixed it by removing Pods from the repo :
git filter-branch --index-filter 'git rm --cached --ignore-unmatch Pods/*' --tag-name-filter cat -- --all