See <https://builds.apache.org/job/sling-trunk-1.8/2171/>
- Jenkins build became unstable: sling-trunk-1.8 #216... 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 still unstable: sling-... Apache Jenkins Server
- Jenkins build is back to stable : s... Apache Jenkins Server