test_r_slope_aspect 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,
.FFE..
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ERROR: setUpClass (__main__.TestSlopeAspectAgainstItself)
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Traceback (most recent call last):
  File "raster/r.slope.aspect/testsuite/test_r_slope_aspect.py", line 113, in setUpClass
    call_module('g.region', raster='elevation')
  File "etc/python/grass/gunittest/gmodules.py", line 131, in call_module
    raise CalledModuleError(returncode, module, kwargs, errors)
CalledModuleError: Module run 1 g.region ended with error
Process ended with non-zero return code {'raster': 'elevation', 'stderr': -1, 'stdout': -1}. See the following errors:
ERROR: Raster map <elevation> not found


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FAIL: test_limits (__main__.TestSlopeAspect)
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Traceback (most recent call last):
  File "raster/r.slope.aspect/testsuite/test_r_slope_aspect.py", line 26, in test_limits
    slope=slope, aspect=aspect)
  File "etc/python/grass/gunittest/case.py", line 1132, in assertModule
    self.fail(self._formatMessage(msg, stdmsg))
AssertionError: Running <r.slope.aspect> module ended with non-zero return code (1)
Called: r.slope_aspect(elevation='elevation', slope='limits_slope', aspect='limits_aspect', format='degrees', precision='FCELL', zscale=1.0, min_slope=0.0)
See the folowing errors:
ERROR: Raster map <elevation> not found


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FAIL: test_limits_precent (__main__.TestSlopeAspect)
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Traceback (most recent call last):
  File "raster/r.slope.aspect/testsuite/test_r_slope_aspect.py", line 36, in test_limits_precent
    slope=slope, aspect=aspect, format='percent')
  File "etc/python/grass/gunittest/case.py", line 1132, in assertModule
    self.fail(self._formatMessage(msg, stdmsg))
AssertionError: Running <r.slope.aspect> module ended with non-zero return code (1)
Called: r.slope_aspect(elevation='elevation', slope='limits_percent_slope', aspect='limits_percent_aspect', format='percent', precision='FCELL', zscale=1.0, min_slope=0.0)
See the folowing errors:
ERROR: Raster map <elevation> not found


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Ran 5 tests in 0.541s
FAILED (failures=2, errors=1)