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