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-main >------------------- [INFO] Building citizens-main 2.0.26-SNAPSHOT [2/10] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ citizens-main --- [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ citizens-main --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 7 resources to . [INFO] [INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ citizens-main --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 136 source files to /var/lib/jenkins/jobs/Citizens2/workspace/main/target/classes [INFO] /var/lib/jenkins/jobs/Citizens2/workspace/main/src/main/java/net/citizensnpcs/trait/versioned/CatTrait.java: Some input files use or override a deprecated API. [INFO] /var/lib/jenkins/jobs/Citizens2/workspace/main/src/main/java/net/citizensnpcs/trait/versioned/CatTrait.java: Recompile with -Xlint:deprecation for details. [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] /var/lib/jenkins/jobs/Citizens2/workspace/main/src/main/java/net/citizensnpcs/npc/ai/AStarNavigationStrategy.java:[118,26] cannot find symbol symbol: method isEmpty() location: variable state of type net.citizensnpcs.api.astar.AStarMachine.AStarState [INFO] 1 error [INFO] -------------------------------------------------------------