Avoid failure on archiving

...
[INFO] BUILD SUCCESS
 [INFO] ------------------------------------------------------------------------
 [INFO] Total time:  02:13 min
 [INFO] Finished at: 2019-05-31T14:26:35+02:00
 [INFO] ------------------------------------------------------------------------
 [Pipeline] }
 [Pipeline] // withEnv
 [Pipeline] }
 [Pipeline] // dir
 [Pipeline] }
 [Pipeline] // stage
 [Pipeline] catchError
 [Pipeline] {
 [Pipeline] archiveArtifacts
 [Pipeline] }
 java.nio.channels.ClosedChannelException
 	at org.jenkinsci.remoting.protocol.NetworkLayer.onRecvClosed(NetworkLayer.java:154)
 	at org.jenkinsci.remoting.protocol.impl.NIONetworkLayer.ready(NIONetworkLayer.java:142)
 	at org.jenkinsci.remoting.protocol.IOHub$OnReady.run(IOHub.java:795)
 	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
 	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
 Caused: hudson.remoting.ChannelClosedException: Channel "unknown": Remote call on JNLP4-connect connection from 83.118.200.178/83.118.200.178:62683 failed. The channel is closing down or has closed down
 	at hudson.remoting.Channel.call(Channel.java:950)
 	at hudson.FilePath.act(FilePath.java:1069)
 	at hudson.FilePath.act(FilePath.java:1058)
 	at hudson.FilePath.mkdirs(FilePath.java:1243)
 	at org.jenkinsci.plugins.workflow.steps.CoreStep$Execution.run(CoreStep.java:79)
 	at org.jenkinsci.plugins.workflow.steps.CoreStep$Execution.run(CoreStep.java:67)
 	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 	at java.lang.Thread.run(Thread.java:748)
 [Pipeline] // catchError
 [Pipeline] }
 [Pipeline] // withEnv
 [Pipeline] }
 [Pipeline] // timeout
 [Pipeline] }
 [Pipeline] // node
 [Pipeline] End of Pipeline
 Finished: FAILURE