Appreciation to https://github.com/jnthn for his recent update to https://github.com/jnthn/p6-io-socket-async-ssl.
My lab consists of the below Linux platforms, where the starred four distributions were snagged on IO::Socket::Async::SSL, thereby holding back cro. Not tonight! CentOS Linux release 7.9.2009 (Core) * CentOS Linux release 8.2.2004 (Core) Debian GNU/Linux 10 (buster) Fedora 32 (Thirty Two) * Fedora 33 (Thirty Three) Oracle Linux Server 7.9 * Oracle Linux Server 8.3 openSUSE Leap 15.2 Ubuntu 18.04.5 LTS * Ubuntu 20.04.1 LTS Gratitude for getting cro via IO::Socket::Async::SSL enabled on these more recent distros. - Mark