I've been looking forward to contributing some packages to Guix, but so
far, I've not been able to figure out from the manual, so I'm going through
the entire Contributing
<https://guix.gnu.org/manual/devel/en/html_node/Contributing.html> section.

So far, after the `guix shell -D guix -CPW` command, I've reached the `make
check` part, where the tests fail. What logs should I share, so that I can
make it easier for people to check out the issue that's stopping me from
progressing?

So far, it generates the following files:

```console
$ ls tests/ | grep .log
accounts.log
base16.log
base32.log
base64.log
boot-parameters.log
bournish.log
build-emacs-utils.log
builders.log
build-utils.log
cache.log
challenge.log
channels.log
combinators.log
composer.log
containers.log
cpan.log
cpio.log
cran.log
crate.log
cve.log
debug-link.log
derivations.log
```