One could argue that in 2017 software that is safety-critical and/or handles potentially untrusted input should be written in memory-safe languages. Rust is one

One could argue that in 2017 software that is safety-critical and/or handles potentially untrusted input should be written in memory-safe languages. Rust is one such choice, but there are certainly other valid choices too. But, given that dovecot just got a glowing security audit, perhaps there are other software projects that should be prioritized higher in the "rewrite everything in rust" list..