Sorry if this does not belong here, I'm not totally sure where it would go...

OS: CentOS
v: 1.530

Also, build timeout plugin is not used on this particular job...

FATAL: null
java.lang.NullPointerException
at hudson.plugins.build_timeout.BuildTimeoutWrapper$1EnvironmentImpl.<init>(BuildTimeoutWrapper.java:106)
at hudson.plugins.build_timeout.BuildTimeoutWrapper.setUp(BuildTimeoutWrapper.java:120)
at hudson.model.Build$BuildExecution.doRun(Build.java:154)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:567)
at hudson.model.Run.execute(Run.java:1603)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:246)