Starting pre-build for Sauce Labs plugin
Starting Sauce Connect on master node using identifier: default
Launching Sauce Connect on ip-10-197-79-50
Sauce Connect 4.3.9 now launched for: xyz
Incremented process count for xyz, now 1
Finished pre-build for Sauce Labs plugin
ERROR: Build step failed with exception
java.lang.NullPointerException
	at hudson.plugins.sauce_ondemand.SauceOnDemandBuildWrapper$1.buildEnvVars(SauceOnDemandBuildWrapper.java:367)
	at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:944)
	at hudson.tasks.Ant.perform(Ant.java:144)
	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
	at hudson.model.Build$BuildExecution.build(Build.java:205)
	at hudson.model.Build$BuildExecution.doRun(Build.java:162)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:537)
	at hudson.model.Run.execute(Run.java:1741)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:98)
	at hudson.model.Executor.run(Executor.java:381)