test_strds_to_rast3 stderr

/usr/lib/python2.7/xml/etree/ElementTree.py:1627: DeprecationWarning: This method of XMLParser is deprecated.  Define doctype() method on the TreeBuilder target.
  DeprecationWarning,
E
======================================================================
ERROR: test_3m_gap (__main__.TestSTRDSToRast3)
Convert STRDS with gaps into 3d raster map, granularity 3 months
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Traceback (most recent call last):
  File "temporal/t.rast.to.rast3/testsuite/test_strds_to_rast3.py", line 178, in test_3m_gap
    self.assertModuleKeyValue(module=univar, reference=univar_string, precision=2, sep="=")
  File "etc/python/grass/gunittest/case.py", line 225, in assertModuleKeyValue
    self.runModule(module, expecting_stdout=True)
  File "etc/python/grass/gunittest/case.py", line 1110, in runModule
    " output and got " + got + errors)
RuntimeError: Module call r3.univar(map='precip_i', percentile=[90.0], separator='pipe', flags=u'g') ended successfully but we were expecting output and got nothing. There were no error messages.

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Ran 1 test in 7.054s
FAILED (errors=1)