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