Hey everyone ,
There have been a lot of issues lately related to
iOS UI tests and new kinds of
xcodebuild exit code 65. Some of them are related to you switching to Xcode 8 some are probably unrelated.
I do not have a sane explanation at this point for any of your issues, nor do I have a solution for you but I have a couple of ideas and the more data we gather the faster I can resolve this for you.
I will update this post tomorrow with further information for you and maybe some stuff for you to try.
Thank you for your patience, I want to resolve this as fast as I possibly can for you.