Traceback (most recent call last):
  File "/usr/bin/vmbuilder", line 24, in <module>
    cli.main()
  File "/usr/lib/python2.7/dist-packages/VMBuilder/contrib/cli.py", line 227, in main
    hypervisor.finalise(destdir)
  File "/usr/lib/python2.7/dist-packages/VMBuilder/hypervisor.py", line 78, in finalise
    self.call_hooks('deploy', destdir)
  File "/usr/lib/python2.7/dist-packages/VMBuilder/distro.py", line 67, in call_hooks
    call_hooks(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/VMBuilder/util.py", line 158, in call_hooks
    getattr(plugin, func, log_no_such_method)(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/VMBuilder/plugins/libvirt/__init__.py", line 83, in deploy
    self.conn.defineXML(vmxml)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1368, in defineXML
    if ret is None:raise libvirtError('virDomainDefineXML() failed', conn=self)
libvirtError: internal error no supported architecture for os type 'hvm'