eg. http://logs.openstack.org/87/199387/127/check/networking-midonet-tempest-multinode-ml2/84487ea/logs/devstacklog.txt.gz#_2019-02-26_13_01_01_812
2019-02-26 13:00:59.862 | venv-tempest runtests: commands[0] | pip install -c /opt/stack/new/requirements/upper-constraints.txt /opt/stack/new/neutron-tempest-plugin
2019-02-26 13:01:00.219 | DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
2019-02-26 13:01:00.361 | Ignoring Django: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.363 | Ignoring Django: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.365 | Ignoring Django: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.397 | Ignoring SecretStorage: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.399 | Ignoring SecretStorage: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.401 | Ignoring SecretStorage: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.469 | Ignoring asyncio: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.470 | Ignoring asyncio: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.472 | Ignoring asyncio: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.547 | Ignoring dnspython: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.549 | Ignoring dnspython: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.551 | Ignoring dnspython: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.554 | Ignoring dnspython3: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.556 | Ignoring dnspython3: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.558 | Ignoring dnspython3: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.635 | Ignoring jeepney: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.637 | Ignoring jeepney: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.639 | Ignoring jeepney: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.682 | Ignoring more-itertools: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.683 | Ignoring more-itertools: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.685 | Ignoring more-itertools: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.694 | Ignoring mypy: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.696 | Ignoring mypy: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.698 | Ignoring mypy: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:00.700 | Ignoring mypy-extensions: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:00.702 | Ignoring mypy-extensions: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:00.704 | Ignoring mypy-extensions: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:01.085 | Ignoring typed-ast: markers 'python_version == "3.4"' don't match your environment
2019-02-26 13:01:01.087 | Ignoring typed-ast: markers 'python_version == "3.5"' don't match your environment
2019-02-26 13:01:01.089 | Ignoring typed-ast: markers 'python_version == "3.6"' don't match your environment
2019-02-26 13:01:01.131 | Looking in indexes: http://mirror.ord.rax.openstack.org/pypi/simple, http://mirror.ord.rax.openstack.org/wheel/ubuntu-16.04-x86_64
2019-02-26 13:01:01.132 | Processing /opt/stack/new/neutron-tempest-plugin
2019-02-26 13:01:01.812 | Could not satisfy constraints for 'neutron-tempest-plugin': installation from path or url cannot be constrained to a version
2019-02-26 13:01:01.897 | ERROR: InvocationError for command '/opt/stack/new/tempest/.tox/tempest/bin/pip install -c /opt/stack/new/requirements/upper-constraints.txt /opt/stack/new/neutron-tempest-plugin' (exited with code 1)
a revert https:/