I pushed a commit to upgrade jclouds to Checkstyle 2.13 which addresses these symptoms. However, I suspect that the small BuildHive instances will not benefit from additional parallelism.
I've now re-enabled parallel builds on the jclouds-java-8 job [1]. If that goes well (no new test failures), I suggest we try it on jclouds-pull-requests [2].
ap [1] https://jclouds.ci.cloudbees.com/job/jclouds-java-8/ [2] https://jclouds.ci.cloudbees.com/job/jclouds-pull-requests/