From console log https://ci.fuel-infra.org/job/verify-python-fuelclient/3138/consoleFull :
[ . . . ]
functional installed: appdirs==1.4.3,Babel==2.3.4,cliff==2.4.0,cmd2==0.7.0,coverage==4.3.4,debtcollector==1.12.0,extras==1.0.0,fixtures==3.0.0,flake8==2.5.5,funcsigs==1.0.2,gprof2dot==2016.10.13,hacking==0.12.0,iso8601==0.1.11,keystoneauth1==2.19.0,linecache2==1.0.0,mccabe==0.2.1,mock==2.0.0,monotonic==1.3,mox3==0.21.0,msgpack-python==0.4.8,netaddr==0.7.19,netifaces==0.10.5,os-client-config==1.26.0,os-testr==0.8.0,oslo.config==3.23.0,oslo.i18n==3.14.0,oslo.serialization==2.17.0,oslo.utils==3.23.0,oslotest==2.14.0,packaging==16.8,pbr==2.0.0,pep8==1.5.7,positional==1.1.1,prettytable==0.7.2,pyflakes==0.8.1,pyparsing==2.2.0,pyprof2calltree==1.4.0,-e git+https://review.openstack.org/openstack/python-fuelclient.git@0cb219fffcbc9dde50c019c29d9c15e1cd77bcf8#egg=python_fuelclient,python-keystoneclient==3.10.0,python-mimeparse==1.6.0,python-subunit==1.2.0,pytz==2016.10,PyYAML==3.12,requests==2.13.0,requests-mock==1.3.0,requestsexceptions==1.2.0,rfc3986==0.4.1,six==1.10.0,stevedore==1.21.0,testrepository==0.0.20,testtools==2.2.0,traceback2==1.4.0,unicodecsv==0.14.1,unittest2==1.1.0,wrapt==1.10.10
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File "/home/jenkins/workspace/verify-python-fuelclient/fuel-web/.tox/venv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 851, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (requests 2.13.0 (/home/jenkins/workspace/verify-python-fuelclient/fuel-web/.tox/venv/lib/python2.7/site-packages), Requirement.parse('requests!=2.12.2,!=2.13.0,>=2.10.0'), set(['python-cinderclient']))
It was already fixed