I have been playing around with the playpen and discovered that I could issue commands from rust with
ls to look around the system and then
cat some config files, etc.
Here is a Playpen link where you can find some examples.
So I just wanted to make sure that this is the intended behaviour and not some security issue.
I now know that the server runs Arch Linux with an Intel® Xeon® CPU E5-2670 v2 @ 2.50GHz and is running perl 5, version 20, subversion 2 (v5.20.2)