FailedConsole Output

Started by upstream project "org.subshare" build number 249
originally caused by:
 Started by an SCM change
Building in workspace /home/tomcat/.jenkins/workspace/org.subshare.www
 > git rev-parse --is-inside-work-tree
Fetching changes from the remote Git repository
 > git config remote.origin.url https://github.com/subshare/subshare.git
Fetching upstream changes from https://github.com/subshare/subshare.git
 > git --version
 > git fetch --tags --progress https://github.com/subshare/subshare.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse origin/master^{commit}
Checking out Revision 5bae3d305d95ba79dc1555a4ed054bfd7afea52f (origin/master)
 > git config core.sparsecheckout
 > git checkout -f 5bae3d305d95ba79dc1555a4ed054bfd7afea52f
 > git rev-list 93f0a052ac7e5f59ed5fccfd21258255d75901e3
Parsing POMs
[org.subshare] $ /usr/lib/jvm/java-8-openjdk-amd64/bin/java -cp /home/tomcat/.jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-agent-1.4.jar:/home/tomcat/.jenkins/tools/hudson.tasks.Maven_MavenInstallation/maven-3.0.4/boot/plexus-classworlds-2.4.jar org.jvnet.hudson.maven3.agent.Maven3Main /home/tomcat/.jenkins/tools/hudson.tasks.Maven_MavenInstallation/maven-3.0.4 /home/tomcat/apache-tomcat-7.0.40/webapps/jenkins/WEB-INF/lib/remoting-2.43.jar /home/tomcat/.jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-1.4.jar /home/tomcat/.jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-commons-1.4.jar 37508
<===[JENKINS REMOTING CAPACITY]===>channel started
Executing Maven:  -B -f /home/tomcat/.jenkins/workspace/org.subshare.www/org.subshare/pom.xml clean install site site-deploy
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] org.subshare.parent
[INFO] org.subshare.site.skin
[INFO] org.subshare
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building org.subshare.parent 0.10.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.4.1/maven-clean-plugin-2.4.1.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] org.subshare.parent ............................... FAILURE [1.158s]
[INFO] org.subshare.site.skin ............................ SKIPPED
[INFO] org.subshare ...................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.939s
[INFO] Finished at: Tue Mar 14 05:18:16 CET 2017
[INFO] Final Memory: 9M/179M
[INFO] ------------------------------------------------------------------------
[JENKINS] Archiving /home/tomcat/.jenkins/workspace/org.subshare.www/org.subshare/org.subshare.site.skin/pom.xml to org.subshare/org.subshare.site.skin/0.10.0-SNAPSHOT/org.subshare.site.skin-0.10.0-SNAPSHOT.pom
[JENKINS] Archiving /home/tomcat/.jenkins/workspace/org.subshare.www/org.subshare/pom.xml to org.subshare/org.subshare/0.10.0-SNAPSHOT/org.subshare-0.10.0-SNAPSHOT.pom
[JENKINS] Archiving /home/tomcat/.jenkins/workspace/org.subshare.www/org.subshare/org.subshare.parent/pom.xml to org.subshare/org.subshare.parent/0.10.0-SNAPSHOT/org.subshare.parent-0.10.0-SNAPSHOT.pom
[ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1 from/to central (http://repo.maven.apache.org/maven2): repo.maven.apache.org: Temporary failure in name resolution: Unknown host repo.maven.apache.org: Temporary failure in name resolution -> [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/PluginResolutionException
channel stopped
Warning: you have no plugins providing access control for builds, so falling back to legacy behavior of permitting any downstream builds to be triggered
Finished: FAILURE