[SSH] script:
df -h | head -3 | grep -E '90%|91%|92%|93%|94%|95%|96%|97%|98%|99%|100%'
if [ $? == 0 ]
then
 echo "TestDrive Server: Not Enough free disk space, please remove some files"
 exit 1
else 
 echo "TestDrive Server: Disk Space is free, chill !!!!"
 exit 0
fi
[SSH] executing...
ERROR: Build step failed with exception
java.lang.NullPointerException
 at com.cloudbees.plugins.credentials.matchers.IdMatcher.<init>(IdMatcher.java:56)
 at com.cloudbees.plugins.credentials.CredentialsMatchers.withId(CredentialsMatchers.java:132)
 at org.jvnet.hudson.plugins.CredentialsSSHSite.lookupCredentialsById(CredentialsSSHSite.java:313)
 at org.jvnet.hudson.plugins.CredentialsSSHSite.createSession(CredentialsSSHSite.java:111)
 at org.jvnet.hudson.plugins.CredentialsSSHSite.executeCommand(CredentialsSSHSite.java:208)
 at org.jvnet.hudson.plugins.SSHBuilder.perform(SSHBuilder.java:104)
 at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
 at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
 at hudson.model.Build$BuildExecution.build(Build.java:206)
 at hudson.model.Build$BuildExecution.doRun(Build.java:163)
 at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
 at hudson.model.Run.execute(Run.java:1798)
 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
 at hudson.model.ResourceController.execute(ResourceController.java:97)
 at hudson.model.Executor.run(Executor.java:429)
Build step 'Execute shell script on remote host using ssh' marked build as failure
Sending e-mails to: kakadia@avaya.com nandaa@avaya.com
Finished: FAILURE