Failure in sun/security/tools/keytool/WeakAlg.java - ks: The process cannot access the file because it is being used by another process

Test sun/security/tools/keytool/WeakAlg.java occasionally fails on Windows 64 bit (win2016, win11.)

Error logs contain the following message:

---------------------------------------------
$ rm ks
----------System.err:(22/1459)----------
java.nio.file.FileSystemException: ks: The process cannot access the file because it is being used by another process.

        at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:86)
        at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97)
        at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102)
        at sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:269)
        at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
        at java.nio.file.Files.deleteIfExists(Files.java:1165)
        at WeakAlg.rm(WeakAlg.java:940)
        at WeakAlg.main(WeakAlg.java:147)
        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:498)
        at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
        at java.lang.Thread.run(Thread.java:750)

JavaTest Message: Test threw exception: java.nio.file.FileSystemException: ks: The process cannot access the file because it is being used by another process.

JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.nio.file.FileSystemException: ks: The process cannot access the file because it is being used by another process.