oclint/oclint-xcodebuild — pull request #8 by alanf (2013-12-05 23:57:00+00:00)
Title: Write distinct file path entries only.

This issue affected me as well:
https://groups.google.com/forum/#!topic/oclint-users/J5Xkxpooois

It wasn't due to tee; oclint-xcodebuild will write duplicate file entries, and Xcode will mark the SDK as having errors.