I'm running docker that maps a local workspace to a volume with read/write access. On run time there are some files generated in the docker image. As a result these files were created with Docker user but physically reside on Jenkins' workspace.

The plugin cannot clean up these directories and seems to be taking the whole slave offline.
I'm guessing that 'AccessDeniedException' is not handled:

<===[JENKINS REMOTING CAPACITY]===>channel started
Slave.jar version: 2.52
This is a Unix slave
Evacuated stdout
Slave successfully connected and online
log4j:WARN No appenders could be found for logger (org.apache.commons.beanutils.converters.BooleanConverter).
log4j:WARN Please initialize the log4j system properly.
Oct 29, 2015 11:52:58 AM hudson.plugins.ws_cleanup.Wipeout$Command invoke
SEVERE: Unable to delete workspace
java.nio.file.AccessDeniedException: /home/jenkins/workspace/SNAPSHOTS/security_models/security_models_FunctionalTests_ws-cleanup_1446119577715/target/it-classes/hibernate.properties
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:244)
at sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:103)
at java.nio.file.Files.delete(Files.java:1126)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at hudson.Util.deleteFile(Util.java:247)
at hudson.Util.deleteRecursive(Util.java:310)
at hudson.Util.deleteContentsRecursive(Util.java:212)
at hudson.Util.deleteRecursive(Util.java:301)
at hudson.Util.deleteContentsRecursive(Util.java:212)
at hudson.Util.deleteRecursive(Util.java:301)
at hudson.Util.deleteContentsRecursive(Util.java:212)
at hudson.Util.deleteRecursive(Util.java:301)
at hudson.plugins.ws_cleanup.Wipeout$Command.invoke(Wipeout.java:73)
at hudson.plugins.ws_cleanup.Wipeout$Command.invoke(Wipeout.java:70)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2688)
at hudson.remoting.UserRequest.perform(UserRequest.java:121)
at hudson.remoting.UserRequest.perform(UserRequest.java:49)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Oct 29, 2015 11:52:58 AM hudson.plugins.ws_cleanup.Wipeout$Command invoke
SEVERE: Workspace not deleted successfully: /home/jenkins/workspace/SNAPSHOTS/security_models/security_models_FunctionalTests_ws-cleanup_1446119577715
Oct 29, 2015 6:19:29 PM hudson.plugins.ws_cleanup.Wipeout$Command invoke
SEVERE: Unable to delete workspace
java.nio.file.AccessDeniedException: /home/jenkins/workspace/SNAPSHOTS/dataset-exec/dataset-exec_FunctionalTests_ws-cleanup_1446142768472/target/it-classes/datasetdef.yaml
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:244)
at sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:103)
at java.nio.file.Files.delete(Files.java:1126)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at hudson.Util.deleteFile(Util.java:247)
at hudson.Util.deleteRecursive(Util.java:310)
at hudson.Util.deleteContentsRecursive(Util.java:212)
at hudson.Util.deleteRecursive(Util.java:301)
at hudson.Util.deleteContentsRecursive(Util.java:212)
at hudson.Util.deleteRecursive(Util.java:301)
at hudson.Util.deleteContentsRecursive(Util.java:212)
at hudson.Util.deleteRecursive(Util.java:301)
at hudson.plugins.ws_cleanup.Wipeout$Command.invoke(Wipeout.java:73)
at hudson.plugins.ws_cleanup.Wipeout$Command.invoke(Wipeout.java:70)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2688)
at hudson.remoting.UserRequest.perform(UserRequest.java:121)
at hudson.remoting.UserRequest.perform(UserRequest.java:49)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)