Traceback (most recent call last):

 "./train.py", line 53, in <module>
loss.backward()

 "/home/eddie/envs/deep/local/lib/python2.7/site-packages/chainer/variable.py", line 355, in backward
for gx in gxs):

 "/home/eddie/envs/deep/local/lib/python2.7/site-packages/chainer/variable.py", line 355, in <genexpr>
for gx in gxs):TypeError: ufunc 'isnan' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''
Traceback (most recent call last):

 "/usr/local/lib/python3.4/dist-packages/nose/failure.py", line 39, in runTest
raise self.exc_val.with_traceback(self.tb)

 "/usr/local/lib/python3.4/dist-packages/nose/loader.py", line 403, in loadTestsFromName
module = resolve_name(addr.module)

 "/usr/local/lib/python3.4/dist-packages/nose/util.py", line 321, in resolve_name
obj = getattr(obj, part)AttributeError: 'module' object has no attribute 'test_patheffects'