See <https://builds.apache.org/job/Log4j%202.x/3181/display/redirect?page=changes>
- Jenkins build became unstable: Log4j 2.x #3179 Apache Jenkins Server
- Build failed in Jenkins: Log4j 2.x #3180 Apache Jenkins Server
- Jenkins build is unstable: Log4j 2.x #3181 Apache Jenkins Server
- Jenkins build is still unstable: Log4j ... Apache Jenkins Server
- Jenkins build is back to stable : L... Apache Jenkins Server
