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] -----------------< 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] -------------------------------------------------------------