I think this one actually has the same root case as Karlin reported: I traced this back to the garbage collector freeing objects prematurely. Apparently it's not really happy that I made it unaware of threading... I've just finished building anew, please give https://github.com/hahnjo/lilypond-binaries/releases/tag/2020-03-12 a try. Or rebuild with the updated scripts 😉
Yes, this binary works fine
