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 2.0.29-SNAPSHOT [2/13] [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 9 resources to . [INFO] [INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ citizens-main --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 148 source files to /var/lib/jenkins/jobs/Citizens2/workspace/main/target/classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] /var/lib/jenkins/jobs/Citizens2/workspace/main/src/main/java/net/citizensnpcs/npc/skin/SkinnableEntity.java:[5,26] cannot access com.mojang.authlib.GameProfile bad class file: /var/lib/jenkins/.m2/repository/com/mojang/authlib/3.2.38/authlib-3.2.38.jar(com/mojang/authlib/GameProfile.class) class file has wrong version 60.0, should be 52.0 Please remove or make sure it appears in the correct subdirectory of the classpath. [INFO] 1 error [INFO] ------------------------------------------------------------- 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 2.0.29-SNAPSHOT: [INFO] [INFO] citizens-parent .................................... SUCCESS [ 2.753 s] [INFO] citizens-main ...................................... FAILURE [ 8.809 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-v1_16_R3 .................................. SKIPPED [INFO] citizens-v1_17_R1 .................................. SKIPPED [INFO] citizens-v1_18_R1 .................................. SKIPPED [INFO] citizens ........................................... SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 16.987 s [INFO] Finished at: 2021-12-01T14:59:22Z [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/skin/SkinnableEntity.java:[5,26] cannot access com.mojang.authlib.GameProfile [ERROR] bad class file: /var/lib/jenkins/.m2/repository/com/mojang/authlib/3.2.38/authlib-3.2.38.jar(com/mojang/authlib/GameProfile.class) [ERROR] class file has wrong version 60.0, should be 52.0 [ERROR] Please remove or make sure it appears in the correct subdirectory of the classpath. [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