Assuming you're deploying to the same OS/architecture that you're working from, otherwise you'd have to rebuild (which Rust makes easy to do, but still)
Though in all those cases, for me, all alternatives are just as bad or worse.
Getting ansible running on a windows server is... unfortunate. Ensuring that your bash script runs on OSX is easier, but I've had lots of unexpected issues with tools like grep or find working just a tiny bit different. And so on.
Trivial. All of the tooling, dependency management, linking, etc. is neatly bundled together under cargo. Just run "cargo build" for the current system, or specify one or more other architectures as arguments to get multiple binaries. Everything's statically-linked so you should be able to scp those wherever.
Still, when we're talking about casual "scripts" even this extra step seems a little bit burdensome