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java.lang.IllegalThreadStateException: null at java.lang.Thread.start(Unknown Source)[na:1.8.0_40] at net.schmizz.sshj.transport.TransportImpl.init(TransportImpl.java:167)[karamel.exe:na] at net.schmizz.sshj.SSHClient.onConnect(SSHClient.java:671)[karamel.exe:na] at net.schmizz.sshj.SocketClient.connect(SocketClient.java:71)[karamel.exe:na] at net.schmizz.sshj.SocketClient.connect(SocketClient.java:77)[karamel.exe:na] at se.kth.karamel.backend.machines.SshMachine.connect(SshMachine.java:450)[karamel.exe:na] at se.kth.karamel.backend.machines.SshMachine.ping(SshMachine.java:527)[karamel.exe:na] at se.kth.karamel.backend.machines.MachinesMonitor.run(MachinesMonitor.java:101)[karamel.exe:na] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)[na:1.8.0_40] at java.util.concurrent.FutureTask.run(Unknown Source)[na:1.8.0_40] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)[na:1.8.0_40] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)[na:1.8.0_40] at java.lang.Thread.run(Unknown Source)[na:1.8.0_40]