buidslave assertion failure

[erno]

I get a traceback like this with current git of buildbot (using Twisted shipped in Ubuntu 10.04 rc).

2010-04-27 07:53:32+0300 [Broker,client] error in ShellCommand._startCommand
2010-04-27 07:53:32+0300 [Broker,client] Unhandled Error
	Traceback (most recent call last):
	  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 213, in addCallbacks
	    self._runCallbacks()
	  File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 371, in _runCallbacks
	    self.result = callback(self.result, *args, **kw)
	  File "/usr/local/lib/python2.6/dist-packages/buildbot/slave/commands/vcs.py", line 1020, in _doFetch
	    return self._dovccmd(command, self._didFetch)
	  File "/usr/local/lib/python2.6/dist-packages/buildbot/slave/commands/vcs.py", line 945, in _dovccmd
	    d = c.start()
	--- <exception caught here> ---
	  File "/usr/local/lib/python2.6/dist-packages/buildbot/slave/commands/base.py", line 382, in start
	    self._startCommand()
	  File "/usr/local/lib/python2.6/dist-packages/buildbot/slave/commands/base.py", line 498, in _startCommand
	    for arg in argv: assert isinstance(arg, str), (type(arg), arg)
	exceptions.AssertionError: (<type 'unicode'>, u'+develop')
	

The relevant bit of master.cfg is

f1.addStep(Git(repourl="git://github.com/realXtend/naali.git", branch="develop"))

[erno]

Oops, I had the master running with PYTHONPATH pointing to an old version of buildbot. Nevermind.