After a successful build, on a JNLP slave, the following error is logged, and
the build is marked failed, even though it succeeded. I found
org.apache.tools.ant.types.ResourceCollection was part of ant 1.7.0 which is the
version of ant we're using on both master and slave side.

BUILD SUCCESSFUL

Total time: 6 seconds

FATAL:
org.apache.tools.ant.taskdefs.Untar.add(Lorg/apache/tools/ant/types/ResourceCollection;)V

java.lang.NoSuchMethodError:
org.apache.tools.ant.taskdefs.Untar.add(Lorg/apache/tools/ant/types/ResourceCollection;)V

at hudson.FilePath.readFromTar(FilePath.java:741)

at hudson.FilePath.copyRecursiveTo(FilePath.java:678)

at hudson.tasks.ArtifactArchiver.perform(ArtifactArchiver.java:65)

at hudson.model.Build$RunnerImpl.post(Build.java:151)

at hudson.model.Run.run(Run.java:557)

at hudson.model.Build.run(Build.java:115)

at hudson.model.Executor.run(Executor.java:61)