Asterinas: OS kernel written in Rust and providing Linux-compatible ABI

Hardly different from downloading random binary installers and executing them. Or random source distributions and (sudo) make install. Or npm/pip/cargo/etc. install random packages. Before anyone mentions distros and package managers, as a former team member of a major package manager I can assure you we don’t vet shit beyond project notability, and new versions are accepted semi-automatically. We’ll yank something after the fact if you report a malicious update, sure.

curl | bash has an actual problem: potential execution of an incomplete script (which can be mitigated with function calling). And there’s the mostly theoretical problem of the server being pwned / sending malicious code just to you (which of course also applies to any other unsigned channel). Arbitrary code execution is never a problem unique to it, but people dunk on it all the time because they saw another person dunking on it in the past.