$ python -c "import matplotlib as m ; m.test(verbosity=1)"
..K..........................................E....................................................................F..................................K.............................................................................................................................K........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
======================================================================
ERROR: matplotlib.tests.test_axes.test_formatter_ticker.test
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/Users/damon/python/lib/matplotlib/testing/decorators.py", line 36, in failer
    result = f(*args, **kwargs)
  File "/Users/damon/python/lib/matplotlib/testing/decorators.py", line 130, in do_test
    err = compare_images(expected_fname, actual_fname, self._tol, in_decorator=True)
  File "/Users/damon/python/lib/matplotlib/testing/compare.py", line 215, in compare_images
    actual = convert(actual)
  File "/Users/damon/python/lib/matplotlib/testing/compare.py", line 139, in convert
    converter[extension](filename, newname)
  File "/Users/damon/python/lib/matplotlib/testing/compare.py", line 99, in convert
    raise IOError, msg
IOError: Conversion command failed:
inkscape -z /Users/damon/result_images/test_axes/formatter_ticker_002.svg --export-png /Users/damon/result_images/test_axes/formatter_ticker_002_svg.png
Standard output:
Background RRGGBBAA: ffffff00
Area 0:0:720:540 exported to 720 x 540 pixels (90 dpi)
Bitmap saved as: /Users/damon/result_images/test_axes/formatter_ticker_002_svg.png

Standard error:

Emergency save activated!
Emergency save completed. Inkscape will close now.
If you can reproduce this crash, please file a bug at www.inkscape.org
with a detailed description of the steps leading to the crash, so we can fix it.
** Message: Error: Inkscape encountered an internal error and will close now.




======================================================================
FAIL: matplotlib.tests.test_axes.test_single_point.test
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/Users/damon/python/lib/matplotlib/testing/decorators.py", line 36, in failer
    result = f(*args, **kwargs)
  File "/Users/damon/python/lib/matplotlib/testing/decorators.py", line 140, in do_test
    '(RMS %(rms).3f)'%err)
ImageComparisonFailure: images not close: /Users/damon/result_images/test_axes/single_point_svg.png vs. /Users/damon/result_images/test_axes/expected-single_point_svg.png (RMS 83.929)

----------------------------------------------------------------------
Ran 1068 tests in 1172.727s

FAILED (KNOWNFAIL=3, errors=1, failures=1)
/Users/damon/python/lib/matplotlib/__init__.py:921: UserWarning:  This call to matplotlib.use() has no effect
because the the backend has already been chosen;
matplotlib.use() must be called *before* pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.

  if warn: warnings.warn(_use_error_msg)