In tests/twisted/roster/ensure.py we expect two EnsureChannel calls to be processed together. If the first call is completely processed before the second is dispatched, the NewChannels signal might happen between the two returns, rather than after them both; this causes intermittent test failures. My suggested workaround is to just delete the expectation of NewChannels (we know it works, and if it doesn't, it's telepathy-glib's fault anyway). I'm filing this as a bug rather than committing it because I don't want to block the 0.7.15 release on it.
Fixed in git.
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