FYI, this is one of the cases where $^E is more informative than $! (on Windows). For this failure, it would report: 

The process cannot access the file because it is being used by another
+ process

[download]

When writing Perl code that will only be run on Windows, I sometimes report $^E as well as or instead of reporting $!. Most of the time it doesn't matter. But there are a few cases where $^E more accurately points to the real source of the failure.

- tye        

In reply to Re: Can't remove directory-Permission denied ($^E) by tye
in thread Can't remove directory-Permission denied by rrrrr

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