2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "unit-agent-deployer" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "ssh-authkeys-updater" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "logging-config-updater" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "reboot-executor" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "api-address-updater" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "log-sender" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "serving-info-setter" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "tools-version-checker" manifold worker stopped: <nil>
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "migration-minion" manifold worker stopped: "migration-fortress" not running: dependency not available
2017-12-18 20:36:40 DEBUG juju.mongo mongo.go:508 mongo exists as expected
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "unit-agent-deployer" manifold worker stopped: "migration-fortress" not running: dependency not available
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "reboot-executor" manifold worker stopped: "migration-fortress" not running: dependency not available
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "unconverted-api-workers" manifold worker stopped: "migration-fortress" not running: dependency not available
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "machine-action-runner" manifold worker stopped: "migration-fortress" not running: dependency not available
2017-12-18 20:36:40 DEBUG juju.worker.dependency engine.go:500 "log-forwarder" manifold worker stopped: "upgrade-check-flag" not set: dependency not available
2017-12-18 20:36:40 DEBUG juju.cmd.jujud machine.go:1419 mongodb service is installed
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0xabbfab]

goroutine 89 [running]:
github.com/juju/juju/agent.(*configInternal).MongoInfo(0xc4200ce3c0, 0x0, 0x0)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/agent/agent.go:787 +0x1db
github.com/juju/juju/cmd/jujud/agent.openState(0x35add00, 0xc4200ce3c0, 0x6fc23ac00, 0xdf8475800, 0x0, 0x23ba090, 0xc42045e2d0, 0x0, 0x0, 0x0, ...)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/cmd/jujud/agent/machine.go:1437 +0x88
github.com/juju/juju/cmd/jujud/agent.(*MachineAgent).initState(0xc4202cd000, 0x35add00, 0xc4200ce3c0, 0xc4202cd000, 0x35add00, 0xc4200ce3c0)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/cmd/jujud/agent/machine.go:947 +0xf6
github.com/juju/juju/cmd/jujud/agent.(*MachineAgent).(github.com/juju/juju/cmd/jujud/agent.initState)-fm(0x35add00, 0xc4200ce3c0, 0xc4200ce3c0, 0x1d1cb20, 0xc4201bce8c)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/cmd/jujud/agent/machine.go:530 +0x3e
github.com/juju/juju/worker/state.Manifold.func1(0x35967e0, 0xc4203c2e60, 0x1b, 0xc4204f0c28, 0x1, 0x1)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/worker/state/manifold.go:62 +0x16a
github.com/juju/juju/worker/dependency.(*Engine).runWorker.func1(0x0, 0x0, 0x0, 0x0)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/worker/dependency/engine.go:432 +0x3d1
github.com/juju/juju/worker/dependency.(*Engine).runWorker.func2(0x2154ee0, 0xc4202cbdc0)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/worker/dependency/engine.go:436 +0x75
github.com/juju/juju/worker/dependency.(*Engine).runWorker(0xc420100d20, 0x22f4086, 0x5, 0x337f980, 0xc42015e040, 0xc4203c2e60)
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/worker/dependency/engine.go:468 +0x1ff
created by github.com/juju/juju/worker/dependency.(*Engine).requestStart
        /tmp/tmpclEdI8/juju-core_2.1.3/src/github.com/juju/juju/worker/dependency/engine.go:342 +0x321
ubuntu@node4:~$