I've been trying to install pmd plugin and checkstyle plugin on my Jenkins server for a while using different method (automatic, manual) without a success. In both cases I'm getting the same error:
ava.io.IOException: Failed to dynamically deploy this plugin
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1322)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1121)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110)
at java.lang.Thread.run(Unknown Source)
Caused by: java.nio.file.FileSystemException: D:\Jenkins\plugins\checkstyle\WEB-INF\lib\annotations-2.0.0.jar: The process cannot access the file because it is being used by another process.

at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsFileSystemProvider.implDelete(Unknown Source)
at sun.nio.fs.AbstractFileSystemProvider.delete(Unknown Source)
at java.nio.file.Files.delete(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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.ClassicPluginStrategy.explode(ClassicPluginStrategy.java:522)
at hudson.ClassicPluginStrategy.createPluginWrapper(ClassicPluginStrategy.java:166)
at hudson.PluginManager.dynamicLoad(PluginManager.java:448)
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1318)
... 6 more

This was originally tried on Jenkins 1.565.2 and then I upgraded to Jenkins 1.608 hoping this will resolve the issue but it didn't. I also tried to install previous version of checkstyle plugin but no luck with that either.
I used Process Explorer to see what's blocking annotations-2.0.0.jar but it only shows java. What could be the issue here? The Static Analysis Utilities plugin is installed (1.71).