Cython.Compiler.Errors.CompileError: Cython.Compiler.Errors.CompileError: /home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/cymj.pyx

ubuntu系统下，python3.6，anaconda下配置mujoco210环境时遇到报错：

/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/registration.py:14: PkgResourcesDeprecationWarning: Parameters to load are deprecated.  Call .resolve and .require separately.
  result = entry_point.load(False)
Compiling /home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/cymj.pyx because it changed.
[1/1] Cythonizing /home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/cymj.pyx

Error compiling Cython file:
------------------------------------------------------------
...
    See c_warning_callback, which is the C wrapper to the user defined function
    '''
    global py_warning_callback
    global mju_user_warning
    py_warning_callback = warn
    mju_user_warning = c_warning_callback
                       ^
------------------------------------------------------------

/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/cymj.pyx:92:23: Cannot assign type 'void (const char *) except * nogil' to 'void (*)(const char *) noexcept nogil'. Exception values are incompatible. Suggest adding 'noexcept' to type 'void (const char *) except * nogil'.

Error compiling Cython file:
------------------------------------------------------------
...
    See c_warning_callback, which is the C wrapper to the user defined function
    '''
    global py_error_callback
    global mju_user_error
    py_error_callback = err_callback
    mju_user_error = c_error_callback
                     ^
------------------------------------------------------------

/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/cymj.pyx:127:21: Cannot assign type 'void (const char *) except * nogil' to 'void (*)(const char *) noexcept nogil'. Exception values are incompatible. Suggest adding 'noexcept' to type 'void (const char *) except * nogil'.
Traceback (most recent call last):
  File "train_ddpg_gym.py", line 173, in <module>
    main()
  File "train_ddpg_gym.py", line 92, in main
    env = make_env(test=False)
  File "train_ddpg_gym.py", line 74, in make_env
    env = gym.make(args.env)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/registration.py", line 163, in make
    return registry.make(id)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/registration.py", line 119, in make
    env = spec.make()
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/registration.py", line 85, in make
    cls = load(self._entry_point)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/registration.py", line 14, in load
    result = entry_point.load(False)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2450, in load
    return self.resolve()
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2456, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/mujoco/__init__.py", line 1, in <module>
    from gym.envs.mujoco.mujoco_env import MujocoEnv
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/gym/envs/mujoco/mujoco_env.py", line 11, in <module>
    import mujoco_py
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/__init__.py", line 2, in <module>
    from mujoco_py.builder import cymj, ignore_mujoco_warnings, functions, MujocoException
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/builder.py", line 504, in <module>
    cymj = load_cython_ext(mujoco_path)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/builder.py", line 110, in load_cython_ext
    cext_so_path = builder.build()
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/builder.py", line 226, in build
    built_so_file_path = self._build_impl()
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/builder.py", line 296, in _build_impl
    so_file_path = super()._build_impl()
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/builder.py", line 239, in _build_impl
    dist.ext_modules = cythonize([self.extension])
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/Cython/Build/Dependencies.py", line 1134, in cythonize
    cythonize_one(*args)
  File "/home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/Cython/Build/Dependencies.py", line 1301, in cythonize_one
    raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: /home/devil/anaconda3/envs/chainerRL/lib/python3.6/site-packages/mujoco_py/cymj.pyx

解决方法：

更换cython版本：

pip install Cython==3.0.0a10

============================================