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Executing Maven:  -B -f /var/lib/jenkins/jobs/CitizensAPI/workspace/pom.xml clean install javadoc:javadoc
[INFO] Scanning for projects...
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[INFO] Building CitizensAPI 2.0.22-SNAPSHOT
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[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ citizensapi ---
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[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
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[ERROR] COMPILATION ERROR : 
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[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] /var/lib/jenkins/jobs/CitizensAPI/workspace/src/main/java/net/citizensnpcs/api/ai/flocking/GroupNPCFlock.java:[25,62] error: <anonymous net.citizensnpcs.api.ai.flocking.GroupNPCFlock$1> is not abstract and does not override abstract method test(NPC) in Predicate
[INFO] 2 errors 
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Started calculate disk usage of build
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[INFO] BUILD FAILURE
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[INFO] Total time: 28.959s
[INFO] Finished at: Fri Jun 02 10:18:15 GMT 2017
[INFO] Final Memory: 20M/97M
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[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project citizensapi: Compilation failure: Compilation failure:
Waiting for Jenkins to finish collecting data
[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] /var/lib/jenkins/jobs/CitizensAPI/workspace/src/main/java/net/citizensnpcs/api/ai/flocking/GroupNPCFlock.java:[25,62] error: <anonymous net.citizensnpcs.api.ai.flocking.GroupNPCFlock$1> is not abstract and does not override abstract method test(NPC) 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