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Established TCP socket on 34847 <===[JENKINS REMOTING CAPACITY]===> channel started Executing Maven: -B -f /var/lib/jenkins/jobs/Webizen/workspace/pom.xml clean install [INFO] Scanning for projects... [HUDSON] Collecting dependencies info [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building Webizen 0.2.0-SNAPSHOT [INFO] ------------------------------------------------------------------------ Downloading: http://repo.bukkit.org/content/groups/public/org/bukkit/bukkit/1.13.2-R0.1-SNAPSHOT/maven-metadata.xml Downloading: http://repo.citizensnpcs.co/org/bukkit/bukkit/1.13.2-R0.1-SNAPSHOT/maven-metadata.xml [WARNING] Could not transfer metadata org.bukkit:bukkit:1.13.2-R0.1-SNAPSHOT/maven-metadata.xml from/to bukkit-repo (http://repo.bukkit.org/content/groups/public/): Error transferring file: repo.bukkit.org Downloading: http://repo.bukkit.org/content/groups/public/org/bukkit/bukkit/1.13.2-R0.1-SNAPSHOT/maven-metadata.xml [WARNING] Could not transfer metadata org.bukkit:bukkit:1.13.2-R0.1-SNAPSHOT/maven-metadata.xml from/to bukkit-repo (http://repo.bukkit.org/content/groups/public/): Error transferring file: repo.bukkit.org [WARNING] The POM for net.aufdemrand:denizen:jar:1.0.3-SNAPSHOT is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details [INFO] [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ webizen --- [INFO] Deleting /var/lib/jenkins/jobs/Webizen/workspace/target [INFO] [INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ webizen --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 1 resource [INFO] [INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ webizen --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 10 source files to /var/lib/jenkins/jobs/Webizen/workspace/target/classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? [INFO] 1 error [INFO] ------------------------------------------------------------- [WARNING] Attempt to (de-)serialize anonymous class org.jfrog.hudson.maven2.MavenDependenciesRecorder$1; see: https://jenkins.io/redirect/serialization-of-anonymous-classes/ Started calculate disk usage of build Finished Calculation of disk usage of build in 0 seconds Started calculate disk usage of workspace Finished Calculation of disk usage of workspace in 0 seconds [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.277s [INFO] Finished at: Mon Feb 25 20:20:34 GMT 2019 [INFO] Final Memory: 11M/100M [INFO] ------------------------------------------------------------------------ Waiting for Jenkins to finish collecting data [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project webizen: Compilation failure [ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? [ERROR] -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException