If Rust is widely adopted, it'll save megabytes per executable compared to go or a nodejs tool with all its copies of all its modules.
Really, the scale of efficiency delta between various things used on computers today is vast, and it's hard to say whether something like this "easter egg" is really significant. A few years ago I knew of a linux distro called "slitaz" that was a 30mb ISO, and it had x windows and a minimal window manager and a barebones browser and such.
Because the Go runtime is statically linked into every binary built by Go. This is nice for deployment, since you can just plop the binary onto any ol' server, but makes for large binaries.
Really, the scale of efficiency delta between various things used on computers today is vast, and it's hard to say whether something like this "easter egg" is really significant. A few years ago I knew of a linux distro called "slitaz" that was a 30mb ISO, and it had x windows and a minimal window manager and a barebones browser and such.