@civodul @dthompson Neat!
The other thing I wanted to test was whether it worked on Windows Subsystem for Linux, which I don't have direct access to. I figured that was as substantial test program.
The answer is no, presumably because of some namespaces thing, but look at just how alarming the error message they shared was, haha:
~/supertux$ ./supertux-bin/supertux2
./supertux-bin/supertux2: error: 'clone' failed: Invalid argument
supertux2: run.c:123: rm_rf: Unexpected error: Device or resource busy.
Aborted (core dumped)