$ pip install python-rapidjson
Collecting python-rapidjson
  Using cached python-rapidjson-0.0.9.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-q9nkddjq/python-rapidjson/setup.py", line 43, in <module>
        with open('CHANGES.rst', encoding='utf-8') as f:
    FileNotFoundError: [Errno 2] No such file or directory: 'CHANGES.rst'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-q9nkddjq/python-rapidjson/