I'm using:
Hudson 1.320
Maven 2.2.1
Sun JDK 1.5.0_20-b02 HotSpot 64-Bit Server VM

A ClassCastException happens just after the "BUILD SUCCESSFUL" message (it
happened in 2 consecutive builds):

[...]
[INFO] [cargo:deploy

]
[INFO] [talledLocalContainer] Parsed JBoss version = [42x]
[INFO] [stalledLocalDeployer] Deploying
[/home/ci-admin/hudson/jobs/RIA-rc-hourly/workspace/target/webb-2.0.war] to
[/mnt/shares/apollo/jboss/server/default/deploy]...
[TASKS] Scipping maven reporter: there is already a result available.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 33 minutes 37 seconds
[INFO] Finished at: Thu Aug 20 20:35:58 BRT 2009
[INFO] Final Memory: 79M/497M
[INFO] ------------------------------------------------------------------------
ERROR: Processing failed due to a bug in the code. Please report this to
users@hudson.dev.java.net
java.lang.ClassCastException
project=hudson.maven.MavenModuleSet@4e392db8[RIA-rc-hourly]
project.getModules()=[hudson.maven.MavenModule@64964f8e[RIA-rc-hourly/br.com.webb.ria:ria]]
project.getRootModule()=hudson.maven.MavenModule@64964f8e[RIA-rc-hourly/br.com.webb.ria:ria]
FATAL: null
java.lang.ClassCastException