See <https://builds.apache.org/job/sling-trunk-1.6/1934/changes>
- Jenkins build became unstable: sling-trunk-1.6 #193... Apache Jenkins Server
- Jenkins build is still unstable: sling-trunk-1.... Apache Jenkins Server
- Jenkins build is still unstable: sling-trun... Apache Jenkins Server
- Jenkins build is back to stable : sling... Apache Jenkins Server