dill error

[simplew2011]

• python 3.8.5
• ubuntu 18.04

  File "/home/wzp/.conda/envs/3.8.5/lib/python3.8/site-packages/dill-0.3.4-py3.8.egg/dill/_dill.py", line 327, in loads
    return load(file, ignore, **kwds)
  File "/home/wzp/.conda/envs/3.8.5/lib/python3.8/site-packages/dill-0.3.4-py3.8.egg/dill/_dill.py", line 313, in load
    return Unpickler(file, ignore=ignore, **kwds).load()
  File "/home/wzp/.conda/envs/3.8.5/lib/python3.8/site-packages/dill-0.3.4-py3.8.egg/dill/_dill.py", line 525, in load
    obj = StockUnpickler.load(self)
  File "/home/wzp/.conda/envs/3.8.5/lib/python3.8/site-packages/dill-0.3.4-py3.8.egg/dill/_dill.py", line 887, in _get_attr
    return getattr(self, name, None) or getattr(__builtin__, name)
AttributeError: module 'builtins' has no attribute 'C_ASSERT_ARMORED_INDEX'