At the end of the job:

Waiting for Jenkins to finish collecting data
channel stopped
Run condition [Always] enabling perform for step [Archive the artifacts]
Archiving artifacts
ERROR: Failed to archive artifacts: */.log
hudson.util.IOException2: java.lang.NoClassDefFoundError: Could not initialize class jnr.posix.POSIXFactory
at hudson.FilePath.copyRecursiveTo(FilePath.java:1943)
at hudson.tasks.ArtifactArchiver.perform(ArtifactArchiver.java:137)
at org.jenkins_ci.plugins.run_condition.BuildStepRunner$2.run(BuildStepRunner.java:110)
at org.jenkins_ci.plugins.run_condition.BuildStepRunner$Fail.conditionalRun(BuildStepRunner.java:154)
at org.jenkins_ci.plugins.run_condition.BuildStepRunner.perform(BuildStepRunner.java:105)
at org.jenkins_ci.plugins.flexible_publish.ConditionalPublisher.perform(ConditionalPublisher.java:88)
at org.jenkins_ci.plugins.flexible_publish.FlexiblePublisher.perform(FlexiblePublisher.java:96)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:776)
at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.post2(MavenModuleSetBuild.java:969)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:726)
at hudson.model.Run.execute(Run.java:1618)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:491)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:242)
Caused by: java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: Could not initialize class jnr.posix.POSIXFactory
at hudson.remoting.Channel$4.adapt(Channel.java:755)
at hudson.remoting.Channel$4.adapt(Channel.java:750)
at hudson.remoting.FutureAdapter.get(FutureAdapter.java:55)
at hudson.FilePath.copyRecursiveTo(FilePath.java:1941)
... 15 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class jnr.posix.POSIXFactory
at hudson.os.PosixAPI.jnr(PosixAPI.java:30)
at hudson.util.IOUtils.mode(IOUtils.java:125)
at hudson.util.io.TarArchiver.visit(TarArchiver.java:102)
at hudson.util.DirScanner$Glob.scan(DirScanner.java:133)
at hudson.FilePath.writeToTar(FilePath.java:1979)
at hudson.FilePath.access$1000(FilePath.java:169)
at hudson.FilePath$36.invoke(FilePath.java:1920)
at hudson.FilePath$36.invoke(FilePath.java:1916)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2388)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Build step 'Flexible publish' changed build result to FAILURE
Finished: FAILURE