media-video/mpv was recently keyworded on arm64, see URL. mpv requires rst2pdf, thus dev-python/rst2pdf must be keyworded as well. Please keyword dev-python/rst2pdf on arm64.
Yes, there are other temporary USE=doc failures for arm64, you can ignore the repoman warning for now in this specific case. It's being tested by who keyworded as a follow-up task from me after the PR :)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e58b4ccf2fc9ea5b6f555fb1cf31a71100a543cb commit e58b4ccf2fc9ea5b6f555fb1cf31a71100a543cb Author: Alex Bennée <alex.bennee@linaro.org> AuthorDate: 2018-06-06 10:34:35 +0000 Commit: Mart Raudsepp <leio@gentoo.org> CommitDate: 2018-06-09 14:14:43 +0000 dev-python/rst2pdf: add ~arm64 keyword Closes: https://bugs.gentoo.org/657410 dev-python/rst2pdf/rst2pdf-0.93-r3.ebuild | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
commit e58b4ccf2fc9ea5b6f555fb1cf31a71100a543cb Author: Alex Bennée <alex.bennee@linaro.org> Date: Wed Jun 6 11:34:35 2018 +0100 dev-python/rst2pdf: add ~arm64 keyword