When 'Prune Empty Directories' is checked in Project, and Project checks out
a CVS-module that is a single file, the CVS Tasks fails with this stacktrace:
10:16:23 cvs update -C -d -P -r HEAD -D 29 Oct 2013 10:16:15 +0100 Project.sln
10:16:24 ERROR: CVS empty directory cleanup failed: could not examine d:\jenkins_home\jobs\Project\workspace\Project\Project.sln
10:16:24 java.io.IOException: could not examine d:\jenkins_home\jobs\Project\workspace\Project\Project.sln
10:16:24 at hudson.scm.AbstractCvs.pruneEmptyDirectories(AbstractCvs.java:311)
10:16:24 at hudson.scm.AbstractCvs.access$000(AbstractCvs.java:80)
10:16:24 at hudson.scm.AbstractCvs$1.invoke(AbstractCvs.java:270)
10:16:24 at hudson.scm.AbstractCvs$1.invoke(AbstractCvs.java:245)
10:16:24 at hudson.FilePath.act(FilePath.java:912)
10:16:24 at hudson.FilePath.act(FilePath.java:885)
10:16:24 at hudson.scm.AbstractCvs.perform(AbstractCvs.java:245)
10:16:24 at hudson.scm.AbstractCvs.checkout(AbstractCvs.java:162)
10:16:24 at hudson.scm.CVSSCM.checkout(CVSSCM.java:346)
10:16:24 at hudson.model.AbstractProject.checkout(AbstractProject.java:1411)
10:16:24 at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:652)
10:16:24 at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
10:16:24 at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:557)
10:16:24 at hudson.model.Run.execute(Run.java:1665)
10:16:24 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
10:16:24 at hudson.model.ResourceController.execute(ResourceController.java:88)
10:16:24 at hudson.model.Executor.run(Executor.java:230)
10:16:24 ERROR: Cvs task failed