See <https://builds.apache.org/job/Jena_Development_Test_Windows/org.apache.jena$jena-arq/206/>
- Jenkins build became unstable: Jena_Development_Tes... Apache Jenkins Server
- Jenkins build is still unstable: Jena_Developme... Apache Jenkins Server
- Jenkins build is still unstable: Jena_Devel... Apache Jenkins Server
- Jenkins build is back to stable : Jena_... Apache Jenkins Server
