[root@infra1-keystone-container-0691c0b2 ~]# grep ^keystone= /openstack/venvs/keystone-19.1.0.dev19/constraints.txt
keystone==15.0.0.0rc2.dev36

{
  "attempts": 5,
  "changed": false,
  "cmd": [
    "/openstack/venvs/keystone-19.1.0.dev19/bin/pip2",
    "install",
    "-U",
    "--constraint",
    "/openstack/venvs/keystone-19.1.0.dev19/constraints.txt",
    "--pre",
    "--log",
    "/var/log/python_venv_build.log",
    "--find-links",
    "http://172.29.236.10:8181/os-releases/19.1.0.dev19/centos-7.6-x86_64",
    "--trusted-host",
    "172.29.236.10",
    "keystone",
    "ldappool",
    "osprofiler",
    "PyMySQL",
    "pyngus",
    "python-memcached",
    "python-openstackclient",
    "systemd-python",
    "uWSGI"
  ],
  "msg": "stdout: Looking in links: http://172.29.236.10:8181/os-releases/19.1.0.dev19/centos-7.6-x86_64\nCollecting osprofiler==2.6.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 3))\n  Using cached https://files.pythonhosted.org/packages/4a/4e/372ed8c575a58984629e9d70c83aa717b4d7991ea223d5b6fd1070049301/osprofiler-2.6.0-py2.py3-none-any.whl\nCollecting netaddr==0.7.19 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 9))\n  Using cached https://files.pythonhosted.org/packages/ba/97/ce14451a9fd7bdb5a397abf99b24a1a6bb7a1a440b019bebd2e9a0dbec74/netaddr-0.7.19-py2.py3-none-any.whl\nCollecting prettytable==0.7.2 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 10))\n  Using cached https://files.pythonhosted.org/packages/ef/30/4b0746848746ed5941f052479e7c23d2b56d174b82f4fd34a25e389831f5/prettytable-0.7.2.tar.bz2\nCollecting requests==2.21.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 16))\n  Using cached https://files.pythonhosted.org/packages/7d/e3/20f3d364d6c8e5d2353c72a67778eb189176f08e873c9900e10c0287b84b/requests-2.21.0-py2.py3-none-any.whl\nCollecting ldappool==2.4.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 20))\n  Using cached https://files.pythonhosted.org/packages/a4/f2/e62f2f12a871b7bba62d446a20eec8362cae6fa4c55c3d73c587204dc551/ldappool-2.4.1-py2.py3-none-any.whl\nCollecting oslo.serialization==2.28.2 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 23))\n  Using cached https://files.pythonhosted.org/packages/de/3b/5bf8c699caab1c42af3b77b0ae390a27cb91a4d9d8ca2a011513c2b173b6/oslo.serialization-2.28.2-py2.py3-none-any.whl\nCollecting idna==2.8 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 27))\n  Using cached https://files.pythonhosted.org/packages/14/2c/cd551d81dbe15200be1cf41cd03869a46fe7226e7450af7a6545bfc474c9/idna-2.8-py2.py3-none-any.whl\nCollecting msgpack==0.6.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 30))\n  Using cached https://files.pythonhosted.org/packages/6f/74/06f950e5a4c1fb94b676640b8fea839b80bffdc247144bd054dd5eed250e/msgpack-0.6.1-cp27-cp27mu-manylinux1_x86_64.whl\nCollecting pymysql==0.9.3 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 32))\n  Using cached https://files.pythonhosted.org/packages/ed/39/15045ae46f2a123019aa968dfcba0396c161c20f855f11dea6796bcaae95/PyMySQL-0.9.3-py2.py3-none-any.whl\nCollecting python_memcached==1.59 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 36))\n  Using cached https://files.pythonhosted.org/packages/f5/90/19d3908048f70c120ec66a39e61b92c253e834e6e895cd104ce5e46cbe53/python_memcached-1.59-py2.py3-none-any.whl\nCollecting six==1.12.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 37))\n  Using cached https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl\nCollecting python_openstackclient==3.18.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 40))\n  Using cached https://files.pythonhosted.org/packages/94/0b/ce17ff61441fb091ffbfc7bb9c17cffe175c113aa3717c493cc4687901ff/python_openstackclient-3.18.0-py2.py3-none-any.whl\nCollecting keystoneauth1==3.13.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 47))\n  Using cached https://files.pythonhosted.org/packages/0e/94/d26ba7e370571fc6def4071113cf03b8ee00f41bc2d152fc8eb27585447e/keystoneauth1-3.13.1-py2.py3-none-any.whl\nCollecting python_keystoneclient==3.19.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 49))\n  Using cached https://files.pythonhosted.org/packages/a1/89/8a05ef1d3b54cbb01268b767b8fc28d3b58c4c831606f5830e76bf50f388/python_keystoneclient-3.19.0-py2.py3-none-any.whl\nCollecting babel==2.6.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 56))\n  Using cached https://files.pythonhosted.org/packages/b8/ad/c6f60602d3ee3d92fbed87675b6fb6a6f9a38c223343ababdb44ba201f10/Babel-2.6.0-py2.py3-none-any.whl\nCollecting oslo.utils==3.40.3 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 60))\n  Using cached https://files.pythonhosted.org/packages/8b/0e/00ff0262c153c0ea8f47aca51308a34a8c7296aded51fb34fd0eaba6723d/oslo.utils-3.40.3-py2.py3-none-any.whl\nCollecting pytz==2018.9 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 64))\n  Using cached https://files.pythonhosted.org/packages/61/28/1d3920e4d1d50b19bc5d24398a7cd85cc7b9a75a490570d5a30c57622d34/pytz-2018.9-py2.py3-none-any.whl\nCollecting urllib3==1.24.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 68))\n  Using cached https://files.pythonhosted.org/packages/62/00/ee1d7de624db8ba7090d1226aebefab96a2c71cd5cfa7629d6ad3f61b79e/urllib3-1.24.1-py2.py3-none-any.whl\nCollecting chardet==3.0.4 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 69))\n  Using cached https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl\nCollecting certifi==2018.11.29 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 70))\n  Using cached https://files.pythonhosted.org/packages/9f/e0/accfc1b56b57e9750eba272e24c4dddeac86852c2bebd1236674d7887e8a/certifi-2018.11.29-py2.py3-none-any.whl\nCollecting python_novaclient==13.0.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 77))\n  Using cached https://files.pythonhosted.org/packages/41/a6/5f820c02c5d148d4d185555522442d2d317b280898efd98af80ab5085bb1/python_novaclient-13.0.0-py2.py3-none-any.whl\nCollecting osc_lib==1.12.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 78))\n  Using cached https://files.pythonhosted.org/packages/f8/8e/f0a14e20e403e9579526142158e98db4b146e788877a19fce9d7d6b1b725/osc_lib-1.12.1-py2.py3-none-any.whl\nCollecting python_cinderclient==4.1.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 79))\n  Using cached https://files.pythonhosted.org/packages/45/c8/4ecc0310dbed47d27c366e6915d9c41a91ce97b8fcdba548de94fc9df655/python_cinderclient-4.1.0-py2.py3-none-any.whl\nCollecting openstacksdk==0.26.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 80))\n  Using cached https://files.pythonhosted.org/packages/f4/e9/a6c5edd61a4a0b6c3bf99126f6a8e4f04c7d62a7166c3d715ac02a74c2b3/openstacksdk-0.26.0-py2.py3-none-any.whl\nCollecting cliff==2.14.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 81))\n  Using cached https://files.pythonhosted.org/packages/45/d5/e811665fde537964dd355c6ce38bd1308ef0ebe966fb81b3f2c6810c3845/cliff-2.14.1-py2.py3-none-any.whl\nCollecting python_glanceclient==2.16.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 82))\n  Using cached https://files.pythonhosted.org/packages/95/9f/d89598e6145cd381e24082214fc8a0699bce318f1c8d22001a120c5d92ef/python_glanceclient-2.16.0-py2.py3-none-any.whl\nCollecting iso8601==0.1.12 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 85))\n  Using cached https://files.pythonhosted.org/packages/ef/57/7162609dab394d38bbc7077b7ba0a6f10fb09d8b7701ea56fa1edc0c4345/iso8601-0.1.12-py2.py3-none-any.whl\nCollecting os_service_types==1.6.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 86))\n  Using cached https://files.pythonhosted.org/packages/fa/09/8875a02f9bc9cfa655fb358ccb1846d64c5cfe3d860e767bfd8f34d13ab1/os_service_types-1.6.0-py2.py3-none-any.whl\nCollecting netifaces==0.10.9 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 93))\n  Using cached https://files.pythonhosted.org/packages/7e/02/ad1a92a72620cc17d448fe4dbdfbdf8fe1487ee7bfd82bb48308712c2f3c/netifaces-0.10.9-cp27-cp27mu-manylinux1_x86_64.whl\nCollecting pyparsing==2.3.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 94))\n  Using cached https://files.pythonhosted.org/packages/de/0a/001be530836743d8be6c2d85069f46fecf84ac6c18c7f5fb8125ee11d854/pyparsing-2.3.1-py2.py3-none-any.whl\nCollecting simplejson==3.16.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 104))\n  Using cached https://files.pythonhosted.org/packages/e3/24/c35fb1c1c315fc0fffe61ea00d3f88e85469004713dab488dee4f35b0aff/simplejson-3.16.0.tar.gz\nCollecting requestsexceptions==1.4.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 105))\n  Using cached https://files.pythonhosted.org/packages/01/8c/49ca60ea8c907260da4662582c434bec98716177674e88df3fd340acf06d/requestsexceptions-1.4.0-py2.py3-none-any.whl\nCollecting munch==2.3.2 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 106))\n  Using cached https://files.pythonhosted.org/packages/68/f4/260ec98ea840757a0da09e0ed8135333d59b8dfebe9752a365b04857660a/munch-2.3.2.tar.gz\nCollecting appdirs==1.4.3 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 107))\n  Using cached https://files.pythonhosted.org/packages/56/eb/810e700ed1349edde4cbdc1b2a21e28cdf115f9faf263f6bbf8447c1abf3/appdirs-1.4.3-py2.py3-none-any.whl\nCollecting jsonpatch==1.23 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 108))\n  Using cached https://files.pythonhosted.org/packages/a0/e6/d50d526ae2218b765ddbdb2dda14d65e19f501ce07410b375bc43ad20b7a/jsonpatch-1.23-py2.py3-none-any.whl\nCollecting jmespath==0.9.4 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 109))\n  Using cached https://files.pythonhosted.org/packages/83/94/7179c3832a6d45b266ddb2aac329e101367fbdb11f425f13771d27f225bb/jmespath-0.9.4-py2.py3-none-any.whl\nCollecting cmd2==0.8.9 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 110))\n  Using cached https://files.pythonhosted.org/packages/e9/40/a71caa2aaff10c73612a7106e2d35f693e85b8cf6e37ab0774274bca3cf9/cmd2-0.8.9-py2.py3-none-any.whl\nCollecting unicodecsv==0.14.1 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 111))\n  Using cached https://files.pythonhosted.org/packages/6f/a4/691ab63b17505a26096608cc309960b5a6bdf39e4ba1a793d5f9b1a53270/unicodecsv-0.14.1.tar.gz\nCollecting warlock==1.3.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 112))\n  Using cached https://files.pythonhosted.org/packages/2d/40/9f01a5e1574dab946598793351d59c86f58209d182d229aaa545abb98894/warlock-1.3.0.tar.gz\nCollecting jsonpointer==2.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 115))\n  Using cached https://files.pythonhosted.org/packages/18/b0/a80d29577c08eea401659254dfaed87f1af45272899e1812d7e01b679bc5/jsonpointer-2.0-py2.py3-none-any.whl\nCollecting pyperclip==1.7.0 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 116))\n  Using cached https://files.pythonhosted.org/packages/2d/0f/4eda562dffd085945d57c2d9a5da745cfb5228c02bc90f2c74bbac746243/pyperclip-1.7.0.tar.gz\nCollecting wcwidth==0.1.7 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 117))\n  Using cached https://files.pythonhosted.org/packages/7e/9f/526a6947247599b084ee5232e4f9190a38f398d7300d866af3ab571a5bfe/wcwidth-0.1.7-py2.py3-none-any.whl\nCollecting subprocess32==3.5.3 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 118))\n  Using cached https://files.pythonhosted.org/packages/be/2b/beeba583e9877e64db10b52a96915afc0feabf7144dcbf2a0d0ea68bf73d/subprocess32-3.5.3.tar.gz\nCollecting keystone==15.0.0.0rc2.dev36 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 125))\n\n:stderr: 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.\n  Could not find a version that satisfies the requirement keystone==15.0.0.0rc2.dev36 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 125)) (from versions: 12.0.2, 13.0.2, 14.0.0, 14.0.1, 14.1.0, 15.0.0.0rc1, 15.0.0.0rc2, 15.0.0)\nNo matching distribution found for keystone==15.0.0.0rc2.dev36 (from -c /openstack/venvs/keystone-19.1.0.dev19/constraints.txt (line 125))\n"