Не удается скомпилировать документацию

[type2017]

Здравствуйте,

Не удается скомпилировать документацию, делаю по доке https://github.com/openprocurement/openprocurement.api/blob/master/README.rst

# bin/python bootstrap.py -c docs.cfg
# bin/buildout -N -c docs.cfg
...
six: module references path
Installing six 1.9.0
Caused installation of a distribution:
six 1.10.0
with a different version.
/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/easy_install.py:538: UserWarning: Module six was already imported from /opt/openprocurement.api/lib/python2.7/site-packages/six.pyc, but /opt/openprocurement.api/eggs/six-1.10.0-py2.7.egg is being added to sys.path
ws.add(dist, replace=True)
While:
Installing.
Getting section docs.
Initializing section docs.
Installing recipe collective.recipe.sphinxbuilder.
Getting distribution for 'six==1.9.0'.

An internal error occurred due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/buildout.py", line 1946, in main
getattr(buildout, command)(args)
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/buildout.py", line 510, in install
[self[part]['recipe'] for part in install_parts]
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/buildout.py", line 1098, in getitem
options._initialize()
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/buildout.py", line 1202, in _initialize
self.initialize()
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/buildout.py", line 1208, in initialize
recipe_class = _install_and_load(reqs, 'zc.buildout', entry, buildout)
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/buildout.py", line 1162, in _install_and_load
allow_hosts=buildout._allow_hosts
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/easy_install.py", line 844, in install
return installer.install(specs, working_set)
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/easy_install.py", line 681, in install
for_buildout_run=for_buildout_run):
File "/opt/openprocurement.api/eggs/zc.buildout-2.2.5-py2.7.egg/zc/buildout/easy_install.py", line 545, in _get_dist
dist = self._env.best_match(requirement, ws)
File "/opt/openprocurement.api/lib/python2.7/site-packages/pkg_resources/init.py", line 1085, in best_match
dist = working_set.find(req)
File "/opt/openprocurement.api/lib/python2.7/site-packages/pkg_resources/init.py", line 695, in find
raise VersionConflict(dist, req)
VersionConflict: (six 1.10.0 (/opt/openprocurement.api/eggs/six-1.10.0-py2.7.egg), Requirement.parse('six==1.9.0'))