Users upgrading to PHP 8.1 might start observing failures with `arc`. Commit @ychen's suggestions as a patch in tree that can be applied since arcanist is no longer accepting patches. Also, remove the suggestion to apply an external patch updating CA certs. It seems that this was fixed in upstream arcanist before they stopped accepting patches. Comparee3659d43d8vs13d3a3c3b1Link: https://secure.phabricator.com/book/phabcontrib/article/contributing_code/ Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D129232