See <https://builds.apache.org/job/Log4j%202%203.x/258/display/redirect?page=changes>
- Jenkins build became unstable: Log4j 2 3.x #258 Apache Jenkins Server
- Jenkins build is still unstable: Log4j 2 3.x #2... Apache Jenkins Server
- Jenkins build is back to stable : Log4j 2 3... Apache Jenkins Server
