Comment 1 for bug 1854093

It looks like devstack is installing the python3-yaml that later conflicts with keystone:

2019-11-26 19:24:02.010499 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L265: local localrc_oldnew=old
2019-11-26 19:24:02.010834 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L266: local localrc_file=devstack.local.conf.base
2019-11-26 19:24:02.011127 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L267: local role=primary
2019-11-26 19:24:02.011456 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L273: local branch_for_matrix=stable/train
2019-11-26 19:24:02.011726 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L277: [[ -z '' ]]
2019-11-26 19:24:02.011969 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L278: rm -f devstack.local.conf.base
2019-11-26 19:24:02.014291 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L282: [[ ! -z '' ]]
2019-11-26 19:24:02.015056 | primary | ++ /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L286: which python3
2019-11-26 19:24:02.016667 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L286: PYTHON_PATH=/usr/bin/python3
2019-11-26 19:24:02.017340 | primary | ++ /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L287: basename /usr/bin/python3
2019-11-26 19:24:02.018730 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L287: PYTHON_NAME=python3
2019-11-26 19:24:02.018969 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L288: uses_debs
2019-11-26 19:24:02.019167 | primary | + /opt/stack/new/devstack-gate/functions.sh:uses_debs:L52: type apt-get
2019-11-26 19:24:02.019388 | primary | apt-get is /usr/bin/apt-get
2019-11-26 19:24:02.019620 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L289: dpkg -s python3-yaml
2019-11-26 19:24:02.045207 | primary | dpkg-query: package 'python3-yaml' is not installed and no information is available
2019-11-26 19:24:02.045409 | primary | Use dpkg --info (= dpkg-deb --info) to examine archive files,
2019-11-26 19:24:02.045537 | primary | and dpkg --contents (= dpkg-deb --contents) to list their contents.
2019-11-26 19:24:02.046222 | primary | + /opt/stack/new/devstack-gate/devstack-vm-gate.sh:setup_localrc:L290: apt_get_install python3-yaml
2019-11-26 19:24:02.046457 | primary | + /opt/stack/new/devstack-gate/functions.sh:apt_get_install:L63: [[ -z '' ]]
2019-11-26 19:24:02.046800 | primary | + /opt/stack/new/devstack-gate/functions.sh:apt_get_install:L64: timeout 300 sh -c 'while ! sudo apt-get update; do sleep 30; done'
2019-11-26 19:24:02.215036 | primary | Ign:1 http://mirror.ord.rax.opendev.org/ubuntu bionic InRelease
2019-11-26 19:24:02.215742 | primary | Ign:2 http://mirror.ord.rax.opendev.org/ubuntu bionic-updates InRelease
2019-11-26 19:24:02.216532 | primary | Ign:3 http://mirror.ord.rax.opendev.org/ubuntu bionic-backports InRelease
2019-11-26 19:24:02.218796 | primary | Ign:4 http://mirror.ord.rax.opendev.org/ubuntu bionic-security InRelease
2019-11-26 19:24:02.222386 | primary | Hit:5 http://mirror.ord.rax.opendev.org/ubuntu bionic Release
2019-11-26 19:24:02.224072 | primary | Hit:6 http://mirror.ord.rax.opendev.org/ubuntu bionic-updates Release
2019-11-26 19:24:02.226592 | primary | Hit:7 http://mirror.ord.rax.opendev.org/ubuntu bionic-backports Release
2019-11-26 19:24:02.228653 | primary | Hit:8 http://mirror.ord.rax.opendev.org/ubuntu bionic-security Release
2019-11-26 19:24:02.231556 | primary | Ign:9 http://mirror.ord.rax.opendev.org/ubuntu bionic Release.gpg
2019-11-26 19:24:02.233526 | primary | Ign:10 http://mirror.ord.rax.opendev.org/ubuntu bionic-updates Release.gpg
2019-11-26 19:24:02.234670 | primary | Ign:11 http://mirror.ord.rax.opendev.org/ubuntu bionic-backports Release.gpg
2019-11-26 19:24:02.236992 | primary | Ign:12 http://mirror.ord.rax.opendev.org/ubuntu bionic-security Release.gpg
2019-11-26 19:24:03.875089 | primary | Reading package lists...
2019-11-26 19:24:03.931708 | primary | + /opt/stack/new/devstack-gate/functions.sh:apt_get_install:L68: APT_UPDATED=1
2019-11-26 19:24:03.932186 | primary | + /opt/stack/new/devstack-gate/functions.sh:apt_get_install:L71: sudo DEBIAN_FRONTEND=noninteractive apt-get --assume-yes install python3-yaml
2019-11-26 19:24:04.128438 | primary | Reading package lists...