Twisted 15.2.1

[tnich]

Unable to format event {'log_namespace': 'twisted.logger._global', 'log_level': <LogLevel=warn>, 'fileNow': '/usr/local/lib/python2.7/dist-packages/twisted/python/log.py', 'format': '%(log_legacy)s', 'lineNow': 210, 'fileThen': '/usr/local/lib/python2.7/dist-packages/twisted/python/log.py', 'log_source': None, 'system': '-', 'lineThen': 210, 'log_logger': <Logger 'twisted.logger._global'>, 'time': 1437932082.832762, 'log_format': 'Warning: primary log target selected twice at <{fileNow}:{lineNow}> - previously selected at <{fileThen:logThen}>. Remove one of the calls to beginLoggingTo.', 'message': (), 'log_time': 1437932082.832762}: Invalid conversion specification