See <https://builds.apache.org/job/Karaf-2.3.x/933/>
- Jenkins build became unstable: Karaf-2.3.x #933 Apache Jenkins Server
- Jenkins build is still unstable: Karaf-2.3.x #9... Apache Jenkins Server
- Jenkins build is still unstable: Karaf-2.3.... Apache Jenkins Server
- Jenkins build is back to stable : Karaf... Apache Jenkins Server
