Initialization in sal failed, disconnecting from device

Seen under bgpcep-csit-3node-periodic-bgpclustering-only-carbon/

temporal logs

https://logs.opendaylight.org/sandbox/jenkins091/bgpcep-csit-3node-periodic-bgpclustering-only-carbon/5/archives/odl2_karaf.log.gz

2017-03-21 07:46:18,764 | ERROR | sing-executor-11 | NetconfDevice | 342 - org.opendaylight.netconf.sal-netconf-connector - 1.5.0.SNAPSHOT | RemoteDevice

: Initialization in sal failed, disconnecting from device
java.lang.NullPointerException: Closed
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:226)[84:com.google.guava:18.0.0]
at org.opendaylight.netconf.sal.connect.netconf.sal.NetconfDeviceSalProvider$MountInstance.onTopologyDeviceConnected(NetconfDeviceSalProvider.java:135)[342:org.opendaylight.netconf.sal-netconf-connector:1.5.0.SNAPSHOT]
at org.opendaylight.netconf.topology.singleton.impl.MasterSalFacade.registerMasterMountPoint(MasterSalFacade.java:150)[345:org.opendaylight.netconf.topology-singleton:1.2.0.SNAPSHOT]
at org.opendaylight.netconf.topology.singleton.impl.MasterSalFacade.onDeviceConnected(MasterSalFacade.java:91)[345:org.opendaylight.netconf.topology-singleton:1.2.0.SNAPSHOT]
at org.opendaylight.netconf.topology.singleton.impl.MasterSalFacade.onDeviceConnected(MasterSalFacade.java:44)[345:org.opendaylight.netconf.topology-singleton:1.2.0.SNAPSHOT]
at org.opendaylight.netconf.sal.connect.netconf.NetconfDevice.handleSalInitializationSuccess(NetconfDevice.java:213)[342:org.opendaylight.netconf.sal-netconf-connector:1.5.0.SNAPSHOT]
at org.opendaylight.netconf.sal.connect.netconf.NetconfDevice$SchemaSetup.setUpSchema(NetconfDevice.java:461)[342:org.opendaylight.netconf.sal-netconf-connector:1.5.0.SNAPSHOT]
at org.opendaylight.netconf.sal.connect.netconf.NetconfDevice$SchemaSetup.run(NetconfDevice.java:426)[342:org.opendaylight.netconf.sal-netconf-connector:1.5.0.SNAPSHOT]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_121]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_121]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_121]