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] Reactor Summary for citizens-parent 2.0.26-SNAPSHOT: [INFO] [INFO] citizens-parent .................................... SUCCESS [ 2.439 s] [INFO] citizens-main ...................................... FAILURE [ 19.075 s] [INFO] citizens-v1_8_R3 ................................... SKIPPED [INFO] citizens-v1_10_R1 .................................. SKIPPED [INFO] citizens-v1_11_R1 .................................. SKIPPED [INFO] citizens-v1_12_R1 .................................. SKIPPED [INFO] citizens-v1_13_R2 .................................. SKIPPED [INFO] citizens-v1_14_R1 .................................. SKIPPED [INFO] citizens-v1_15_R1 .................................. SKIPPED [INFO] citizens ........................................... SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 24.882 s [INFO] Finished at: 2020-05-06T10:09:38Z [INFO] ------------------------------------------------------------------------ Waiting for Jenkins to finish collecting data[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project citizens-main: Compilation failure [ERROR] /var/lib/jenkins/jobs/Citizens2/workspace/main/src/main/java/net/citizensnpcs/npc/ai/AStarNavigationStrategy.java:[118,26] cannot find symbol [ERROR] symbol: method isEmpty() [ERROR] location: variable state of type net.citizensnpcs.api.astar.AStarMachine<net.citizensnpcs.api.astar.pathfinder.VectorNode,net.citizensnpcs.api.astar.pathfinder.Path>.AStarState [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 [ERROR] [ERROR] After correcting the problems, you can resume the build with the command [ERROR] mvn <goals> -rf :citizens-main Started Running as SYSTEM Build failed before it gets to this module 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 Finished: NOT_BUILT