I just got a second exception but, unlike the previous one, this one actually causes the build to fail:

FATAL: hudson.model.labels.LabelExpression$Not cannot be cast to hudson.model.labels.LabelAtom
java.lang.ClassCastException: hudson.model.labels.LabelExpression$Not cannot be cast to hudson.model.labels.LabelAtom
	at jenkins.model.Jenkins.getLabelAtom(Jenkins.java:1600)
	at hudson.model.Label.parse(Label.java:556)
	at org.jenkinsci.plugins.xvfb.XvfbBuildWrapper.setUp(XvfbBuildWrapper.java:537)
	at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:653)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:518)
	at hudson.model.Run.execute(Run.java:1706)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:529)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:231)

I got this exception when trying to run the job under OSX. Other platforms (Windows and Linux) did not get this exception. The plugin is configured to only run under Linux so I don't understand why it's triggering this failure under OSX.

Hi,
what version of Jenkins are you running?

Both exceptions occur under Jenkins 1.564.

Is this a bug in Jenkins or in the xvfb plugin?

Hi,
it's most likely the way the plugin uses Jenkins's functionally, will need to dig into it and try to reproduce on 1.564.

Hi,
I've created another beta (1.0.11-beta2) in the experimental plugins update center in which I basically reappropriated code from jenkins-core into the plugin. Otherwise I would have had to check under which version of Jenkins the plugin is running and act accordingly (the signature of the methods changed between versions). I've tested on 1.564 and 1.424.6 (the minimal version) seems ok. Could you test and see if it works in your environment?

thanks

Code changed in jenkins
User: Zoran Regvart
Path:
src/main/java/org/jenkinsci/plugins/xvfb/XvfbBuildWrapper.java
src/main/resources/org/jenkinsci/plugins/xvfb/Messages.properties
http://jenkins-ci.org/commit/xvfb-plugin/34229d91801f058b0c1c9ee4d216a78a79fcdf2e
Log:
JENKINS-23155 Only run plugin under Linux (revised code for future compatibility)

Hi, I've fumbled the release, now its 1.0.11-beta3, the beta2 doesn't have any changes in it ;(

1.0.11-beta3 works for me. Thank you!

Hi, I've released version 1.0.11.