Traceback (most recent call last):


 "mlflow_test.py", line 14, in <module>

pickle.dump(cls, open('test_dump.pkl', 'wb'))
AttributeError: Can't pickle local object '_get_rest_store.<locals>.get_default_host_creds'

Traceback (most recent call last):


 "/home/admin/work/_public-mars-0.1.0b1.zip/mars/worker/execution.py", line 457, in _handle_rejection

six.reraise(*exc)


 "/home/admin/work/_public-mars-0.1.0b1.zip/mars/lib/six.py", line 703, in reraise

raise value


 "/home/admin/work/_public-mars-0.1.0b1.zip/mars/promise.py", line 86, in _wrapped

result = func(*args, **kwargs)


 "/home/admin/work/_public-mars-0.1.0b1.zip/mars/utils.py", line 287, in _wrapped

return func(*args, **kwargs)


 "/home/admin/work/_public-mars-0.1.0b1.zip/mars/worker/execution.py", line 328, in _prepare_inputs

for w in worker_results.children:
AttributeError: 'tuple' object has no attribute 'children'
