[Bug]: Command does not fail on error only

[dkd-kaehm]

Summary

The --fail-on-log and --minimal-test do not work as expected.
The command does not fail with --fail-on-log, if doc-sources contain errors only.

Expected:

The command

• with --fail-on-error MUST fail, if there are errors (currently OK), but
• with --fail-on-log or --minimal-test MUST fail, if there are errors OR warnings

NOTE:

This is difficult to reproduce, so I could not create a simple test case, but it is reproducible in our project in file(EXT:solr VersionMatrix.rst).
Most probably due of multiple tables producing the errors or other stuff containing in that file.

Code snippet that reproduces the problem

Prepare:

git clone https://github.com/TYPO3-Solr/ext-solr.git \
  && cd ext-solr \
  && git reset --hard 4f7b9a73e5cce6f7d836eb3726d0b3e2a48e4310

Test:

MUST fail, but doesn't (See: EXPECTED TO BE PRINTED! is not printed)

docker run --rm --pull always -v "$(pwd)":/project -t ghcr.io/typo3-documentation/render-guides:latest --config=Documentation --fail-on-log || echo 'EXPECTED TO BE PRINTED!'
rm -Rf Documentation-GENERATED-temp/

Fails only if warning is produced(relevant for info only!)

echo -e '\nproduce the warning: |nonExistingVar|' > Documentation/Appendix/VersionMatrix.rst
docker run --rm --pull always -v "$(pwd)":/project -t ghcr.io/typo3-documentation/render-guides:latest --config=Documentation --fail-on-log || echo 'EXPECTED TO BE PRINTED!'
rm -Rf Documentation-GENERATED-temp/

Expected output

Not relevant for rendering.