apm-application-toolkit org.apache.skywalking 5.0.0-alpha 4.0.0 apm-toolkit-log4j-2.x org.apache.logging.log4j log4j-core 2.7 provided org.apache.maven.plugins maven-source-plugin attach-sources none jar 2.4 bintray-wu-sheng-sky-walking-repository wu-sheng-sky-walking-repository https://api.bintray.com/maven/wu-sheng/skywalking/org.apache.skywalking.apm-toolkit-log4j-2.x/;publish=1