Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
make[1]: Entering directory '/builddir/build/BUILD/git-2.49.0-build/git-2.49.0/Documentation'
'/bin/sh' ./howto/howto-index.sh howto/coordinate-embargoed-releases.adoc howto/keep-canonical-history-correct.adoc howto/maintain-git.adoc howto/new-command.adoc howto/rebase-from-internal-branch.adoc howto/rebuild-from-update-hook.adoc howto/recover-corrupted-blob-object.adoc howto/recover-corrupted-object-harder.adoc howto/revert-a-faulty-merge.adoc howto/revert-branch-rebase.adoc howto/separating-topic-branches.adoc howto/setup-git-server-over-http.adoc howto/update-hook-example.adoc howto/use-git-daemon.adoc howto/using-merge-subtree.adoc howto/using-signed-tag-in-pull-request.adoc >howto-index.adoc
make[1]: Leaving directory '/builddir/build/BUILD/git-2.49.0-build/git-2.49.0/Documentation'
make: *** [Makefile:2930: doc] Error 2
This snippet shows that the build has failed when trying to generate documentation.