Watchpack Error (initial scan): Error: EACCES: permission denied, lstat '/mnt/c/...'

I run `webpack --watch --watch-options-stdin ...` and amidst its _initial_ build (not the subsequent builds triggered by changed files), it prints:



```

Watchpack Error (initial scan): Error: EACCES: permission denied, lstat '/mnt/c/DumpStack.log.tmp'

Watchpack Error (initial scan): Error: EACCES: permission denied, lstat '/mnt/c/hiberfil.sys'

Watchpack Error (initial scan): Error: EACCES: permission denied, lstat '/mnt/c/pagefile.sys'

Watchpack Error (initial scan): Error: EACCES: permission denied, lstat '/mnt/c/swapfile.sys'

```



Someone already reported the problem [here](https://github.com/webpack/webpack-dev-server/issues/2809#issue-733791099), so I'll refer to those details for reproduction. Key elements are webpack v5 and WSL1 under Windows.



The directory `/mnt/c` maps to the Windows root drive `C:\`, which contains these special files like the swapfile, to which the user doesn't have access. That is, the command `ls /mnt/c` fails on the command line too. So it's not surprising that it fails for watchpack too.



What _is_ surprising (to me) is that watchpack attempts to list that directory to begin with. I have no config telling webpack/watchpack what to watch, only that `--watch` flag. Can someone explain this to me?

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