Also allow errno.EBUSY during emptydirs on NFS

- Can occur if a file is still open somewhere, so NFS will rename it to
  a hidden file in the same directory
- When `shutil` tries to delete that hidden file, we get an `OSError`
  with `errno.EBUSY`

Author: HippocampusGirl

nipype/utils/filemanip.py

@@ -781,7 +781,7 @@ def emptydirs(path, noexist_ok=False):
         shutil.rmtree(path)
     except OSError as ex:
         elcont = os.listdir(path)
-        if ex.errno == errno.ENOTEMPTY and not elcont:
+        if ex.errno in [errno.ENOTEMPTY, errno.EBUSY] and not elcont:
             fmlogger.warning(
                 "An exception was raised trying to remove old %s, but the path"
                 " seems empty. Is it an NFS mount?. Passing the exception.",