Created attachment 4322 [details] Build Log Building Qemu with x86_64-mingw32 toolchain fails. Attached the log, which has the info of the layer used and their commits.
That's attr-native so nothing to do with mingw, or qemu. Looks like attr doesn't like cleaning itself, just add CLEANBROKEN="1" to the recipe simply or bitbake -cclean attr-native to solve this.
Merged in oe-core eb924bc684f92fc2d806715872667f241e54b365.