This is a bug in some versions of the Arduino IDE. Try updating to the version 1.6.12 or further.
You have a different solution? A short tip here would help you and many other users who saw this issue last week.
- hudson.util.IOException2: Slave JVM has not reported exit code. Is it still running? at hudson.plugins.sshslaves.SSHLauncher.startSlave(SSHLauncher.java:953) at hudson.plugins.sshslaves.SSHLauncher.access$400(SSHLauncher.java:133) Caused by: java.io.IOException: Cannot run program (in directory ): CreateProcess error=3, The system cannot find the path specified at java.lang.ProcessBuilder.start(Unknown Source) at hudson.Proc$LocalProc.<init>(Proc.java:244)