So Tempest expected EXT-STS:power_state = 3 because that's what it got right after https://github.com/openstack/tempest/blob/23e642498e50f4527847fe1cdf5c46c05454d955/tempest/scenario/test_minimum_basic.py#L55 but then Nova updated (asynchronously ?) the server to put the power_state to 1 (and update the "update" field). So when, Tempest get the server again (https://github.com/openstack/tempest/blob/23e642498e50f4527847fe1cdf5c46c05454d955/tempest/scenario/test_minimum_basic.py#L65) there's the mismatch.
So Tempest expected EXT-STS:power_state = 3 because that's what it got right after https:/ /github. com/openstack/ tempest/ blob/23e642498e 50f4527847fe1cd f5c46c05454d955 /tempest/ scenario/ test_minimum_ basic.py# L55 but then Nova updated (asynchronously ?) the server to put the power_state to 1 (and update the "update" field). So when, Tempest get the server again (https:/ /github. com/openstack/ tempest/ blob/23e642498e 50f4527847fe1cd f5c46c05454d955 /tempest/ scenario/ test_minimum_ basic.py# L65) there's the mismatch.