Should git-annex unused work on a directory special remote? I tried the following:

$ git-annex unused --from SanDisk64GB4Torrented
unused SanDisk64GB4Torrented (checking for unused data...) ok

However, despite git-annex list --in SanDisk64GB4Torrented demonstrating that there were no annex files in it, the size of the directory was still large. And I can see a file in tmp/ of that annex's directory:

$ ls tmp/

Am I right to think that the file being present in tmp/ should cause git-annex unused to list it?

I'm assuming it's fine to just remove the file. But I guess this might be a bug... so I'm putting it out there just in case.