Caused by: java.lang.NullPointerException
	at org.jenkinsci.plugins.p4.tagging.TagAction.getPort(TagAction.java:138)
	at org.jenkinsci.plugins.p4.build.P4EnvironmentContributor.buildEnvironmentFor(P4EnvironmentContributor.java:40)
	at hudson.model.Run.getEnvironment(Run.java:2241)
	at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:922)
	at org.jenkinsci.plugins.p4.PerforceScm.processWorkspaceBeforeDeletion(PerforceScm.java:648)
	at hudson.scm.SCM.processWorkspaceBeforeDeletion(SCM.java:236)
	at hudson.model.AbstractProject.performDelete(AbstractProject.java:375)
	at hudson.model.AbstractItem.delete(AbstractItem.java:589)
	at hudson.model.Job.delete(Job.java:683)
	at hudson.model.AbstractItem.doDoDelete(AbstractItem.java:550)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:324)
	at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:52)
	at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)
	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:167)
	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:100)
	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:124)
	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
	... 73 more