caltlgin [1] filed a deletion request for anki20-bin [2]:

As the maintainer puts it: Anki 2.0 was the previous stable release. No further updates are expected, as the toolkit it was built on has been discontinued. To minimize the risk of bugs and security issues, please consider upgrading to Anki 2.1.

[1] https://aur.archlinux.org/account/caltlgin/ [2] https://aur.archlinux.org/pkgbase/anki20-bin/