MachineSuite.TestDyingMachine Error: timed out waiting for agent to terminate

http://10.125.0.203:8080/job/RunUnittests-amd64-bionic/425/consoleFull

FAIL: machine_test.go:222: MachineSuite.TestDyingMachine
...
[LOG] 0:03.100 DEBUG juju.apiserver -> [3] machine-0 350.498992ms {"request-id":16,"error":"watcher has been stopped","error-code":"stopped","response":"'body redacted'"} NotifyWatcher["3"].Next
[LOG] 0:03.101 DEBUG juju.worker.dependency "reboot-executor" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "machine-action-runner" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "valid-credential-flag" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "api-config-watcher" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "disk-manager" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.api RPC connection died
[LOG] 0:03.101 DEBUG juju.worker.dependency "clock" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "proxy-config-updater" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "log-sender" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "api-caller" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.worker.dependency "termination-signal-handler" manifold worker stopped: <nil>
[LOG] 0:03.101 DEBUG juju.apiserver.logsink logsink receive error: websocket: close 1006 (abnormal closure): unexpected EOF
[LOG] 0:03.102 DEBUG juju.apiserver -> [3] machine-0 168.113788ms {"request-id":45,"error":"watcher has been stopped","error-code":"stopped","response":"'body redacted'"} StringsWatcher["9"].Next
[LOG] 0:03.102 DEBUG juju.rpc error closing codec: write tcp 127.0.0.1:37960->127.0.0.1:33066: write: broken pipe
[LOG] 0:03.102 INFO juju.apiserver.connection agent disconnected: machine-0 for deadbeef-0bad-400d-8000-4b1d0d06f00d
[LOG] 0:03.102 DEBUG juju.apiserver [3] machine-0 API connection terminated after 1.106013923s
[LOG] 0:08.011 DEBUG juju.worker.dependency "migration-fortress" manifold worker stopped: <nil>
[LOG] 0:08.011 DEBUG juju.worker.dependency "unit-agent-deployer" manifold worker stopped: connection is shut down
[LOG] 0:08.011 INFO juju.agent agent already marked ready for uninstall
[LOG] 0:08.011 INFO juju.cmd.jujud uninstalling agent
[LOG] 0:08.011 DEBUG juju.cmd.jujud engine stopped, stopping introspection
[LOG] 0:08.011 DEBUG juju.worker.introspection stats worker closing listener
[LOG] 0:08.011 DEBUG juju.worker.introspection stats worker serving finished
[LOG] 0:08.011 DEBUG juju.worker.introspection stats worker finished
[LOG] 0:08.011 DEBUG juju.cmd.jujud introspection stopped
[LOG] 0:08.014 DEBUG juju.service discovered init system "systemd" from local host
[LOG] 0:08.048 DEBUG juju.service.systemd service "juju-db" not running
machine_test.go:242:
    c.Fatalf("timed out waiting for agent to terminate")
... Error: timed out waiting for agent to terminate

[LOG] 0:13.037 DEBUG juju.service.systemd service "juju-db" not installed
[LOG] 0:13.042 DEBUG juju.api RPC connection died
[LOG] 0:13.043 DEBUG juju.state closed state without error
[LOG] 0:13.043 INFO juju.provider.dummy reset model
[LOG] 0:13.043 DEBUG juju.provider.dummy closing httpServer
[LOG] 0:13.043 DEBUG juju.provider.dummy stopping apiServer
[LOG] 0:13.043 DEBUG juju.rpc error closing codec: write tcp 127.0.0.1:37960->127.0.0.1:60866: write: broken pipe
[LOG] 0:13.043 DEBUG juju.apiserver [1] user-admin API connection terminated after 12.052596192s
[LOG] 0:13.063 DEBUG juju.provider.dummy closing apiStatePool
[LOG] 0:13.065 DEBUG juju.state closed state without error
[LOG] 0:13.065 DEBUG juju.provider.dummy resetting MgoServer
[LOG] 0:13.099 INFO juju.testing reset successfully reset admin password
[LOG] 0:13.117 INFO juju.testing reset successfully reset admin password