polyzen [1] filed a deletion request for rst2html5 [2]:
Unmaintained project. It's docutils dependency started shipping its own rst2html5 some time ago.
[1] https://aur.archlinux.org/account/polyzen/ [2] https://aur.archlinux.org/pkgbase/rst2html5/
Request #14750 has been accepted by polyzen [1].
aur-requests@lists.archlinux.org