https://bugs.winehq.org/show_bug.cgi?id=55473
--- Comment #4 from Zeb Figura z.figura12@gmail.com --- My fear is that it's related to resource exhaustion internally in gcc. You'd kind of think it would report an error in that case, though.
What kind of environment is the OBS building in? Same as the target environment? Something close to stock Ubuntu 20.04?