Я надеюсь, что это шутка

> Yes that is normal. Recent Ubuntu versions are configured to kill a user session when the user uses over half the RAM. (If that‘s even what‘s happening, but it sounds like that should be it)

Ubuntu crashes when running cargo build without jobs limit
https://www.reddit.com/r/rust/comments/1oqaaac/ubuntu_crashes_when_running_cargo_build_without/