Here is the current OS where you run pyoxidizer:

On GitHub Actions, ubuntu-latest is currently being updated to point to ubuntu-22.04, which uses glibc 2.35. Since your binary is not compiled statically, this means for the next doc2dash release you won't support Ubuntu 20.04 and other systems with an older glibc.

And the current release does not support Ubuntu 18.04, as shown by pyoxidizer analyze:

$ pyoxidizer analyze doc2dash

...

glibc
-----

Minimum Version: 2.29
Minimum Distro Versions:
  Debian 11
  Fedora 30
  OpenSUSE 15.3
  RHEL 9
  Ubuntu 19.04

See more details in the documentation: https://pyoxidizer.readthedocs.io/en/stable/pyoxidizer_distributing_linux.html#managing-binary-portability-on-linux

This might not be a problem, but I thought you would like to know.