From 65f799cf0b91502120d6ad1a16665c403bc04256 Mon Sep 17 00:00:00 2001
From: Jesse Glick <jglick@cloudbees.com>
Date: Tue, 31 Mar 2015 10:00:13 -0400
Subject: [PATCH] Illegal to call Jenkins.getNode(null).

---
 .../plugins/workflow/support/steps/ExecutorStepExecution.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/support/src/main/java/org/jenkinsci/plugins/workflow/support/steps/ExecutorStepExecution.java b/support/src/main/java/org/jenkinsci/plugins/workflow/support/steps/ExecutorStepExecution.java
index 9d34000cd..7bfbf5a6e 100644
--- a/support/src/main/java/org/jenkinsci/plugins/workflow/support/steps/ExecutorStepExecution.java
+++ b/support/src/main/java/org/jenkinsci/plugins/workflow/support/steps/ExecutorStepExecution.java
@@ -180,6 +180,9 @@ private Object readResolve() {
         }
 
         @Override public Node getLastBuiltOn() {
+            if (label == null) {
+                return null;
+            }
             Jenkins j = Jenkins.getInstance();
             if (j == null) {
                 return null;