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] ------------------------------------------------------------------------ [INFO] Building denizen-nmshandler 1.0.0-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ denizen-nmshandler --- [INFO] Deleting /var/lib/jenkins/jobs/Denizen/workspace/nmshandler/target [INFO] [INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ denizen-nmshandler --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory /var/lib/jenkins/jobs/Denizen/workspace/nmshandler/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ denizen-nmshandler --- [INFO] Compiling 61 source files to /var/lib/jenkins/jobs/Denizen/workspace/nmshandler/target/classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] Unable to locate the Javac Compiler in: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.102-1.b14.el7_2.x86_64/jre/../lib/tools.jar Please ensure you are using JDK 1.4 or above and not a JRE (the com.sun.tools.javac.Main class is required). In most cases you can change the location of your Java installation by setting the JAVA_HOME environment variable. [INFO] 1 error [INFO] ------------------------------------------------------------- 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] Reactor Summary: [INFO] [INFO] denizen-parent .................................... SUCCESS [0.791s] [INFO] denizen-nmshandler ................................ FAILURE [0.489s] [INFO] denizen-v1_8_R3 ................................... SKIPPED [INFO] denizen-v1_9_R2 ................................... SKIPPED [INFO] denizen-v1_10_R1 .................................. SKIPPED [INFO] Denizen ........................................... SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.853s [INFO] Finished at: Fri Oct 07 09:42:15 GMT 2016 [INFO] Final Memory: 12M/84M [INFO] ------------------------------------------------------------------------ Waiting for Jenkins to finish collecting data[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project denizen-nmshandler: Compilation failure [ERROR] Unable to locate the Javac Compiler in: [ERROR] /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.102-1.b14.el7_2.x86_64/jre/../lib/tools.jar [ERROR] Please ensure you are using JDK 1.4 or above and [ERROR] not a JRE (the com.sun.tools.javac.Main class is required). [ERROR] In most cases you can change the location of your Java [ERROR] installation by setting the JAVA_HOME environment variable. [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 [ERROR] [ERROR] After correcting the problems, you can resume the build with the command [ERROR] mvn <goals> -rf :denizen-nmshandler