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Established TCP socket on 37092 <===[JENKINS REMOTING CAPACITY]===> channel started Executing Maven: -B -f /var/lib/jenkins/jobs/CitizensAPI/workspace/pom.xml -amd -pl net.citizensnpcs:citizensapi clean install javadoc:javadoc [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building CitizensAPI 2.0.21-SNAPSHOT [INFO] ------------------------------------------------------------------------ Downloading: http://repo.bukkit.org/content/groups/public/org/yaml/snakeyaml/1.17/snakeyaml-1.17.pom Downloading: http://repo1.maven.org/maven2/org/yaml/snakeyaml/1.17/snakeyaml-1.17.pom Downloaded: http://repo1.maven.org/maven2/org/yaml/snakeyaml/1.17/snakeyaml-1.17.pom (28 KB at 220.6 KB/sec) Downloading: http://repo.bukkit.org/content/groups/public/org/yaml/snakeyaml/1.17/snakeyaml-1.17.jar Downloading: http://repo1.maven.org/maven2/org/yaml/snakeyaml/1.17/snakeyaml-1.17.jar Downloaded: http://repo1.maven.org/maven2/org/yaml/snakeyaml/1.17/snakeyaml-1.17.jar (268 KB at 175.3 KB/sec) [INFO] [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ citizensapi --- [INFO] [INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ citizensapi --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory /var/lib/jenkins/jobs/CitizensAPI/workspace/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ citizensapi --- [INFO] Compiling 237 source files to /var/lib/jenkins/jobs/CitizensAPI/workspace/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] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.943s [INFO] Finished at: Thu Nov 17 08:03:30 GMT 2016 [INFO] Final Memory: 17M/127M [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 citizensapi: 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