Established TCP socket on 49281 <===[JENKINS REMOTING CAPACITY]===>channel started Executing Maven: -B -f /home/hudson/genie.microprofile/.jenkins/jobs/OpenTracing-maven-snapshots/workspace/pom.xml -pl !spec -Peclipse-jarsigner install [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for org.eclipse.microprofile.opentracing:microprofile-opentracing-tck:jar:1.0-SNAPSHOT [WARNING] 'build.plugins.plugin.version' for org.eclipse.cbi.maven.plugins:eclipse-jarsigner-plugin is missing. @ line 108, column 29 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING]