structuredAttrs is enabled

trying https://files.pythonhosted.org/packages/43/57/4526ca0e214a3d158690e3393f6d547a2f8070f88d6388ab21d5b0aac8a1/marshmallow-4.3.1-py3-none-any.whl
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed

  0      0   0      0   0      0      0      0                              0
100  49219 100  49219   0      0  1.59M      0                              0
100  49219 100  49219   0      0  1.59M      0                              0
100  49219 100  49219   0      0  1.59M      0                              0