There is a problem with 1.9 release.

I have a distributed build on slave machine and after build succeseded there
is an error during collecting findbugs results:
Collecting findbugs analysis files...
FATAL: remote file operation failed
hudson.util.IOException2: remote file operation failed
at hudson.FilePath.act(FilePath.java:276)
at
hudson.plugins.findbugs.FindBugsCounter.findBugs(FindBugsCounter.java:192)
at
hudson.plugins.findbugs.FindBugsPublisher.perform(FindBugsPublisher.java:169
)
at hudson.model.Build$RunnerImpl.post2(Build.java:138)
at
hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:243)
at hudson.model.Run.run(Run.java:595)
at hudson.model.Build.run(Build.java:103)
at
hudson.model.ResourceController.execute(ResourceController.java:66)
at hudson.model.Executor.run(Executor.java:62)
Caused by: java.io.IOException: Unable to serialize
hudson.FilePath$FileCallableWrapper@a6e74b
at hudson.remoting.UserRequest.serialize(UserRequest.java:103)
at hudson.remoting.UserRequest.<init>(UserRequest.java:37)
at hudson.remoting.Channel.call(Channel.java:263)
at hudson.FilePath.act(FilePath.java:273)
... 8 more
Caused by: java.io.NotSerializableException:
hudson.plugins.findbugs.JavaProject
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at
java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:291)
at hudson.remoting.UserRequest.serialize(UserRequest.java:100)
... 11 more

Could you make findbugs specifics classes serializable to avoid such
probems.

With 1.8 it works fine.