I just wanted to let everyone know that all but one of the PowerPC bots are down due to weather-related outages in Austin, Texas. This situation may persist for the remainder of the week depending on how long it takes for normal operations there to resume.
We will do our best to bisect any failures that arise once the bots are back online and will try to minimize the noise. Sorry for any inconvenience this causes the community and we appreciate your understanding.
PowerPC development team.