I would like to add my 'pip freeze'

(.venv)jhammond at ubuntu in /opt/stack/neutron on RM2418_Brocade_Help_Text  
$ pip freeze                                                                 
Babel==1.3                                                                   
Jinja2==2.7.1                                                                
Mako==0.9.0                                                                  
MarkupSafe==0.18                                                             
Paste==1.7.5.1                                                               
PasteDeploy==1.5.0                                                           
Pygments==1.6                                                                
Routes==1.13                                                                 
SQLAlchemy==0.7.10                                                           
Sphinx==1.1.3                                                                
WebOb==1.2.3                                                                 
WebTest==1.3.3                                                               
alembic==0.6.0                                                               
amqp==1.0.13                                                                 
amqplib==1.0.2                                                               
anyjson==0.3.3                                                               
argparse==1.2.1                                                              
cliff==1.4.4                                                                 
cmd2==0.6.5.1                                                                
configobj==4.7.2                                                             
coverage==3.6                                                                
discover==0.4.0                                                              
docutils==0.11                                                               
eventlet==0.13.0                                                             
extras==0.0.3                                                                
fixtures==0.3.14                                                             
flake8==2.0                                                                  
greenlet==0.4.1                                                              
hacking==0.7.1                                                               
httplib2==0.8                                                                
iso8601==0.1.4                                                               
jsonrpclib==0.1.3                                                            
kombu==2.5.14                                                                
mccabe==0.2.1                                                                
mock==1.0.1                                                                  
mox==0.5.3                                                                   
netaddr==0.7.10                                                              
oslo.config==1.2.0a3                                                         
pbr==0.5.21                                                                  
pep8==1.4.5                                                                  
prettytable==0.7.2                                                           
pyflakes==0.7.3                                                              
pyparsing==1.5.7                                                             
python-keystoneclient==0.3.2                                                 
python-mimeparse==0.1.4                                                      
python-neutronclient==2.3.0                                                  
python-novaclient==2.14.1                                                    
python-subunit==0.0.15                                                       
pytz==2013d                                                                  
repoze.lru==0.6                                                              
requests==1.2.3                                                              
simplejson==3.3.0                                                            
six==1.3.0                                                                   
stevedore==0.11                                                              
testrepository==0.0.17                                                       
testtools==0.9.32                                                            
wsgiref==0.1.2                                                               

six 1.3 < 1.4 so why is is failing?