The get_remote_client() uses _log_console_output() function in the exception handling block [1]. This function is consumed from tempest and unfortunately, the function was renamed to log_console_output() there. Thanks to this we encounter an Attribute error in the Exception handling block as the function is not present for the VolumeEncryptionTest. This issue can be probably solved by backporting a change which removes the definition get_remote_client() from barbican-tempest-plugin. Thanks to this change the plugin then should use the functioning get_remote_client() function from tempest. [1] https://opendev.org/openstack/barbican-tempest-plugin/src/commit/9fe096e1422c7c884b94166763b4857b5abcea30/barbican_tempest_plugin/tests/scenario/manager.py#L462