facebook/xctool — pull request #83 by Ebonnov (2013-06-19 03:02:47+00:00)
Title: Ignore instead error on nonexistent reporter

Consider running xctool with some automation and you want to change
a reporter. It can be quite some hassle if xctool fails whenever
the reporter is absent.

Ideally xctool should emit a warning about this, but there isn't an
elegant mechanism to do it at that stage.