During tear-down the following NPE shows up and causes the build to be marked as failed (even though the actual build does succeed):

...
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 12 minutes 18 seconds
[INFO] Finished at: Mon Dec 14 09:53:46 PST 2009
[INFO] Final Memory: 17M/31M
[INFO]
------------------------------------------------------------------------
Waiting for Hudson to finish collecting data
channel stopped
ERROR: Processing failed due to a bug in the code. Please report this to
users@hudson.dev.java.net
java.lang.NullPointerException
at
hudson.plugins.m2extrasteps.M2ExtraStepsWrapper.shouldPostStepsRun(M2ExtraStepsWrapper.java:101)
at
hudson.plugins.m2extrasteps.M2ExtraStepsWrapper.access$000(M2ExtraStepsWrapper.java:46)
at
hudson.plugins.m2extrasteps.M2ExtraStepsWrapper$1.tearDown(M2ExtraStepsWrapper.java:134)
at
hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:494)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:354)
at hudson.model.Run.run(Run.java:1106)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:301)
at hudson.model.ResourceController.execute(ResourceController.java:93)
at hudson.model.Executor.run(Executor.java:122)
project=hudson.maven.MavenModuleSet@169dc09[FormEditorRelease]
project.getModules()=[hudson.maven.MavenModule@1496e57[FormEditorRelease/com.intuit.engine.tpe:tpe-tool-formeditor-ui]]
project.getRootModule()=hudson.maven.MavenModule@1496e57[FormEditorRelease/com.intuit.engine.tpe:tpe-tool-formeditor-ui]
FATAL: null
...

We initially thought that this was an intermittent problem, but ever since the first failure of this type all subsequent builds failed with the same issue. It is not a blocker since the actual build still completes, but our dashboard now shows this particular build as always failing.

A similar issue was reported earlier on the mailing list: http://n4.nabble.com/Maven-Extra-Steps-Error-td367919.html

Thanks for looking into this,

Mirko Raner
Senior Software Engineer
Consumer Group Tools Team
Intuit, Inc.