hard crash on cygwin in call to API

[jarnowic]

I tried (succesfully) to install lunamark on my system (CYGWIN_NT-10.0 3.2.0(0.340/5/3) 2021-03-29 08:42 x86_64 Cygwin); but while trying to compile the standalone lunamark the executable crashes with a mysterious message:

PANIC: unprotected error in call to Lua API (attempt to call a string value)

I have not the faintest clue about where to look for the faulty value. How does the debugging mechanism work in Lua modules?

Trying with Lua 5.3.6 Copyright (C) 1994-2020 Lua.org, PUC-Rio