test_vwhat_layers stderr

/usr/lib/python2.7/xml/etree/ElementTree.py:1638: DeprecationWarning: This method of XMLParser is deprecated.  Define doctype() method on the TreeBuilder target.
  DeprecationWarning,
EE.E
======================================================================
ERROR: test_print_options (__main__.TestMultiLayerMap)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "vector/v.what/testsuite/test_vwhat_layers.py", line 185, in test_print_options
    self.assertModule(self.vwhat)
  File "etc/python/grass/gunittest/case.py", line 1165, in assertModule
    print(module.outputs.stdout)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 616-617: ordinal not in range(128)

======================================================================
ERROR: test_print_options_json (__main__.TestMultiLayerMap)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "vector/v.what/testsuite/test_vwhat_layers.py", line 196, in test_print_options_json
    self.assertModule(self.vwhat)
  File "etc/python/grass/gunittest/case.py", line 1165, in assertModule
    print(module.outputs.stdout)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 722-723: ordinal not in range(128)

======================================================================
ERROR: test_selected_layers (__main__.TestMultiLayerMap)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "vector/v.what/testsuite/test_vwhat_layers.py", line 206, in test_selected_layers
    self.assertModule(self.vwhat)
  File "etc/python/grass/gunittest/case.py", line 1165, in assertModule
    print(module.outputs.stdout)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 522-523: ordinal not in range(128)

----------------------------------------------------------------------
Ran 4 tests in 1.166s
FAILED (errors=3)