Just fatal for any setting of open_basedir
Summary:
Fixes T11627.
Beyond being complex, I have no real reason to believe these checks even work (and they don't test repositories, file storage, logfiles, etc).
Test Plan:
Faked the error:
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11627
Differential Revision: https://secure.phabricator.com/D16544