`--log-fd` fails

I have:

• ([x] when completed)
• searched https://gitlab.com/duplicity/duplicity/-/issues for similar issues. If you find a similar issue and the issue is still open, add a comment to the existing issue instead of opening a new one. If you find a Closed issue that seems like it is the same thing that you're experiencing, open a new issue and include a link to the original issue in the body of your new one.
• tested that this issue still occurs on the latest stable snap (install instructions: https://snapcraft.io/duplicity), please include the snap version (snap info duplicity | grep installed) output: installed: 2.0.0 (427) 167MB classic
• ideally, tested that this issue still occurs on the latest edge snap, if you can test without risking your data. Please include the snap version output: installed: 2.0.0 (427) 167MB classic

Summary

--log-fd fails, e.g. when tested with collection-status

Environment

Ubuntu 22.04.3 LTS amd64

(duplicity --version) duplicity 2.0.0

(command line used) /snap/bin/duplicity collection-status --log-fd 1

Steps to reproduce

Any command with --log-fd parameter fails.

What is the current bug behaviour?

/snap/bin/duplicity collection-status --log-fd 1
CommandLineError: Source should be url, not directory.  Got '1' instead.

What is the expected correct behaviour?

duplicity collection-status: error: the following arguments are required: target_url