This broke the documentation build with the log ending with something like ... GEN asciidoctor-extensions.rb GEN docinfo.html GEN howto-index.txt * new asciidoc flags ASCIIDOC git-tools.html ... ASCIIDOC howto/keep-canonical-history-correct.html ASCIIDOC howto/maintain-git.html gmake[1]: *** No rule to make target 'asciidoc.conf', needed by 'technical/api-error-handling.html'. Stop. gmake[1]: *** Waiting for unfinished jobs.... ASCIIDOC howto/coordinate-embargoed-releases.html asciidoctor: FAILED: 'asciidoctor-extensions' could not be loaded Use --trace to show backtrace gmake[1]: *** [Makefile:428: howto/new-command.html] Error 1 I think all my builds these days (including the ones that push out to https://github.com/git/htmldocs.git that in turn results in pages at https://git.github.io/htmldocs/ getting updated) use asciidoctor with "USE_ASCIIDOCTOR=YesPlease", if it makes a difference. Thanks.