>[...] the standard library is about as complete as you can get (and probably better than the classical scripting languages — all of Ruby/Python/Perl missed a good API for some things like HTTP, which led to the rise of separate packages like Faraday/Requests/etc)
What? Rust basically has no standard library. At least Python doesn't require pulling in third-party libraries to do globbing, create a zip/tar, create a tempfile or send/serve http. Hell, it doesn't even do command-line arguments outside of manually parsing and iterating over the args vector.