There's a new girara version available, required for zathura 0.3.3; Reproducible: Always No new requirements compared to version 0.2.3, simply renaming the ebuild works for me.
+*girara-0.2.4 (01 Jun 2015) + + 01 Jun 2015; Michael Weber <xmw@gentoo.org> +girara-0.2.4.ebuild: + Version bump (thanks Jan-Willem Liebezeit, bug 549874). +