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[INFO] 
[INFO] -----------------< net.citizensnpcs:citizens-v1_8_R3 >------------------
[INFO] Building citizens-v1_8_R3 2.0.28-SNAPSHOT                         [3/12]
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ citizens-v1_8_R3 ---
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ citizens-v1_8_R3 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /var/lib/jenkins/jobs/Citizens2/workspace/v1_8_R3/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ citizens-v1_8_R3 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 77 source files to /var/lib/jenkins/jobs/Citizens2/workspace/v1_8_R3/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /var/lib/jenkins/jobs/Citizens2/workspace/v1_8_R3/src/main/java/net/citizensnpcs/nms/v1_8_R3/network/EmptyChannel.java:[34,44] multi-catch statement is not supported in -source 1.6
  (use -source 7 or higher to enable multi-catch statement)
[INFO] 1 error
[INFO] -------------------------------------------------------------