We've had the following exception as part of reconfigs for a long time now: File "/tools/buildbot/lib/python2.5/site-packages/buildbot/master.py", line 759, in <lambda> d.addCallback(lambda res: self.loadConfig_Schedulers(schedulers)) File "/tools/buildbot/lib/python2.5/site-packages/buildbot/master.py", line 835, in loadConfig_Schedulers d.addCallback(updateDownstreams) File "/tools/twisted-2.4.0/lib/python2.5/site-packages/twisted/internet/defer.py", line 191, in addCallback callbackKeywords=kw) File "/tools/twisted-2.4.0/lib/python2.5/site-packages/twisted/internet/defer.py", line 182, in addCallbacks self._runCallbacks() --- <exception caught here> --- File "/tools/twisted-2.4.0/lib/python2.5/site-packages/twisted/internet/defer.py", line 307, in _runCallbacks self.result = callback(self.result, *args, **kw) File "/tools/buildbot/lib/python2.5/site-packages/buildbot/master.py", line 834, in updateDownstreams s.checkUpstreamScheduler() File "/tools/buildbot/lib/python2.5/site-packages/buildbot/scheduler.py", line 350, in checkUpstreamScheduler for s in self.parent.allSchedulers(): <type 'exceptions.AttributeError'>: 'NoneType' object has no attribute 'allSchedulers' It seemed to be innocuous at first, but as it turns out, it prevents new ChangeSources to be added. There's an upstream patch for this that catlee is pulling in. We'll land it in tomorrow's downtime.

d'oh