It runs the executed code in order to determine if the bug exists, does it not?
That depends completely on the interesting-ness test that's provided. If you're looking for a compiler bug (like I do often for my language), then the interesting-ness test checks the compile logs for information like the "Segmentation Fault" text, no need to run the actual executable. You could also hoist everything into docker if you really want to, or ship it off to another device to run.