It looks like something went wrong with outputting the file to that location, the file isn't the actual testing script, it's spitting out a wsgi FileWrapper object:
$ curl http://linux-bench.com/linux-bench.sh
<wsgiref.util.FileWrapper instance at 0x7fe332cdecb0>
It looks like something went wrong with outputting the file to that location, the file isn't the actual testing script, it's spitting out a wsgi FileWrapper object: