On chromeos-server51.cbf

12/21 17:45:07.195 DEBUG|        base_utils:0185| Running 'python /usr/local/autotest/scheduler/drone_utility.py --call_time 1482371107.2'
12/21 17:45:07.206 ERROR|     ts_mon_config:0233| Caught an exception while running 'Gauge'.set(0.1, fields={'drone_hostname': 'localhost'})
Traceback (most recent call last):
  File "/usr/local/autotest/site-packages/chromite/lib/ts_mon_config.py", line 227, in _ConsumeMessages
    **message.method_kwargs)
  File "/usr/local/autotest/site-packages/chromite/third_party/infra_libs/ts_mon/common/metrics.py", line 297, in set
    raise errors.MonitoringInvalidValueTypeError(self._name, value)
MonitoringInvalidValueTypeError: Metric "chromeos/autotest/drone/active_process_percentage" was given invalid value "0.1" (<type 'float'>).