Build runs mvn clean install.

Here is the end of the console output:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 47 seconds
[INFO] Finished at: Mon Apr 19 19:17:15 BST 2010
[INFO] Final Memory: 60M/981M
[INFO] ------------------------------------------------------------------------
channel stopped
FATAL: hudson.maven.MavenModuleSetBuild$RunnerImpl.performAllBuildStep(Lhudson/model/BuildListener;Ljava/lang/Iterable;Z)V
java.lang.NoSuchMethodError: hudson.maven.MavenModuleSetBuild$RunnerImpl.performAllBuildStep(Lhudson/model/BuildListener;Ljava/lang/Iterable;Z)V
at hudson.maven.MavenModuleSetBuild$RunnerImpl.post2(MavenModuleSetBuild.java:594)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:528)
at hudson.model.Run.run(Run.java:1267)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:304)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:122)