Established TCP socket on 51234 <===[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 2.0.22-SNAPSHOT [INFO] ------------------------------------------------------------------------ [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 238 source files to /var/lib/jenkins/jobs/CitizensAPI/workspace/target/classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] /var/lib/jenkins/jobs/CitizensAPI/workspace/src/main/java/net/citizensnpcs/api/util/DataKey.java:[140,93] error: <anonymous net.citizensnpcs.api.util.DataKey$1> is not abstract and does not override abstract method test(DataKey) in Predicate [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: 21.180s [INFO] Finished at: Fri Jun 02 10:26:11 GMT 2017 [INFO] Final Memory: 18M/72M [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] /var/lib/jenkins/jobs/CitizensAPI/workspace/src/main/java/net/citizensnpcs/api/util/DataKey.java:[140,93] error: <anonymous net.citizensnpcs.api.util.DataKey$1> is not abstract and does not override abstract method test(DataKey) in Predicate [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