()[root@9c7a6dbbd82d /]# dnf -y install openstack-rally openstack-rally-plugins python3-os-testr
Repository centos-opstools is listed more than once in the configuration
Last metadata expiration check: 0:05:43 ago on Thu 18 Mar 2021 12:36:13 PM UTC.
Error:
 Problem 1: package python3-os-testr-2.0.0-0.20201112131919.248dc81.el8.noarch requires python3-testtools, but none of the providers can be installed
  - conflicting requests
  - nothing provides python3-unittest2 >= 1.0.0 needed by python3-testtools-2.3.0-15.el8.noarch
  - nothing provides python3.6dist(unittest2) >= 1.0.0 needed by python3-testtools-2.3.0-15.el8.noarch
 Problem 2: package python3-rally-3.2.1-0.20210122175927.a72a6e1.el8.noarch requires python3-subunit, but none of the providers can be installed
  - package openstack-rally-3.2.1-0.20210122175927.a72a6e1.el8.noarch requires python3-rally = 3.2.1-0.20210122175927.a72a6e1.el8, but none of the providers can be installed
  - package python3-subunit-1.3.0-16.el8.noarch requires python3.6dist(testtools) >= 0.9.34, but none of the providers can be installed
  - package python3-subunit-1.4.0-1.el8.noarch requires python3.6dist(testtools) >= 0.9.34, but none of the providers can be installed
  - conflicting requests
  - nothing provides python3-unittest2 >= 1.0.0 needed by python3-testtools-2.3.0-15.el8.noarch
  - nothing provides python3.6dist(unittest2) >= 1.0.0 needed by python3-testtools-2.3.0-15.el8.noarch
 Problem 3: package python3-rally-3.2.1-0.20210122175927.a72a6e1.el8.noarch requires python3-subunit, but none of the providers can be installed
  - package openstack-rally-plugins-2.1.1-0.20210208145414.ec1f31a.el8.noarch requires python3-rally, but none of the providers can be installed
  - package python3-subunit-1.3.0-16.el8.noarch requires python3.6dist(testtools) >= 0.9.34, but none of the providers can be installed
  - package python3-subunit-1.4.0-1.el8.noarch requires python3.6dist(testtools) >= 0.9.34, but none of the providers can be installed
  - conflicting requests
  - nothing provides python3-unittest2 >= 1.0.0 needed by python3-testtools-2.3.0-15.el8.noarch
  - nothing provides python3.6dist(unittest2) >= 1.0.0 needed by python3-testtools-2.3.0-15.el8.noarch
(try to add '--skip-broken' to skip uninstallable packages)
()[root@9c7a6dbbd82d /]#