rustic doc fails without reason

[seb-hyland]

I am trying to set up rustic doc. I usually use Eglot, so I tried with that first; I have pandoc, cargo, cargo-makedocs, fd-find, and ripgrep installed. rustic-doc-mode was enabled by default, so I ran rustic-doc-setup and got the following error message:

Setup is converting std. If you want to convert local dependencies, activate rustic-doc-mode when you are in a rust project and run ‘rustic-doc-convert-current-package
Could not finish process: exited abnormally with code 1
. See the *Messages* buffer or *rustic-doc-std-conversion* for more info.

I don't really know what actually failed, and *rustic-doc-std-conversion* doesn't exist. I tried installing lsp-mode to see if that was the issue, but it still fails. As well, trying to run rustic-doc-convert-current-package gives the message Activate rustic-doc-mode to run ‘rustic-doc-convert-current-package even though it is active, but this may be related to the previous failure.
I also get the following error: rustic-doc--start-process: Invalid function: rustic--inheritenv.