Collecting jsmin==2.2.2
  Downloading jsmin-2.2.2.tar.gz (12 kB)
    ERROR: Command errored out with exit status 1:
     command: /home/docs/checkouts/readthedocs.org/user_builds/ddev/envs/latest/bin/python -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-cgn9h2c2/jsmin_b898c765edb744be918e48918aab057b/setup.py'"'"'; __file__='"'"'/tmp/pip-install-cgn9h2c2/jsmin_b898c765edb744be918e48918aab057b/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-vhzx4u3z
         cwd: /tmp/pip-install-cgn9h2c2/jsmin_b898c765edb744be918e48918aab057b/
    Complete output (1 lines):
    error in jsmin setup command: use_2to3 is invalid.