kolla-build.error

ubuntu@clcp-att-comdev-builder:/home/kolla-builder/kolla-6c9b43d$ kolla-build keystone -b ubuntu -t source
INFO:kolla.image.build:Found the docker image folder at /usr/local/share/kolla/docker
INFO:kolla.image.build:Added image base to queue
INFO:kolla.image.build:Attempting to run task BuildTask(base) for the first time
INFO:kolla.image.build.base:Building
ERROR:kolla.image.build.base:Unknown docker error when building
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 425, in builder
    for response in self.dc.build(path=image.path,
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 150, in dc
    self._dc = docker.Client(version='auto', **docker_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 77, in __init__
    self._version = self._retrieve_server_version()
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 97, in _retrieve_server_version
    'Error while fetching server API version: {0}'.format(e)
DockerException: Error while fetching server API version: ('Connection aborted.', error(13, 'Permission denied'))
INFO:kolla.image.build:Attempting to run task BuildTask(base) for the 2 time
INFO:kolla.image.build.base:Building
INFO:kolla.image.build.base:Directory /tmp/kolla-2016-12-05_17-23-23_aPs5Wo/docker/base/plugins already exist. Skipping.
ERROR:kolla.image.build.base:Unknown docker error when building
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 425, in builder
    for response in self.dc.build(path=image.path,
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 150, in dc
    self._dc = docker.Client(version='auto', **docker_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 77, in __init__
    self._version = self._retrieve_server_version()
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 97, in _retrieve_server_version
    'Error while fetching server API version: {0}'.format(e)
DockerException: Error while fetching server API version: ('Connection aborted.', error(13, 'Permission denied'))
INFO:kolla.image.build:Attempting to run task BuildTask(base) for the 3 time
INFO:kolla.image.build.base:Building
INFO:kolla.image.build.base:Directory /tmp/kolla-2016-12-05_17-23-23_aPs5Wo/docker/base/plugins already exist. Skipping.
ERROR:kolla.image.build.base:Unknown docker error when building
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 425, in builder
    for response in self.dc.build(path=image.path,
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 150, in dc
    self._dc = docker.Client(version='auto', **docker_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 77, in __init__
    self._version = self._retrieve_server_version()
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 97, in _retrieve_server_version
    'Error while fetching server API version: {0}'.format(e)
DockerException: Error while fetching server API version: ('Connection aborted.', error(13, 'Permission denied'))
INFO:kolla.image.build:Attempting to run task BuildTask(base) for the 4 time
INFO:kolla.image.build.base:Building
INFO:kolla.image.build.base:Directory /tmp/kolla-2016-12-05_17-23-23_aPs5Wo/docker/base/plugins already exist. Skipping.
ERROR:kolla.image.build.base:Unknown docker error when building
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 425, in builder
    for response in self.dc.build(path=image.path,
  File "/usr/local/lib/python2.7/dist-packages/kolla/image/build.py", line 150, in dc
    self._dc = docker.Client(version='auto', **docker_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 77, in __init__
    self._version = self._retrieve_server_version()
  File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 97, in _retrieve_server_version
    'Error while fetching server API version: {0}'.format(e)
DockerException: Error while fetching server API version: ('Connection aborted.', error(13, 'Permission denied'))
INFO:kolla.image.build:===========================
INFO:kolla.image.build:Images that failed to build
INFO:kolla.image.build:===========================
ERROR:kolla.image.build:barbican-keystone-listener Failed with status: matched
ERROR:kolla.image.build:keystone-fernet Failed with status: matched
ERROR:kolla.image.build:openstack-base Failed with status: matched
ERROR:kolla.image.build:base Failed with status: error
ERROR:kolla.image.build:keystone Failed with status: matched
ERROR:kolla.image.build:keystone-ssh Failed with status: matched
ERROR:kolla.image.build:barbican-base Failed with status: matched
ERROR:kolla.image.build:keystone-base Failed with status: matched