gcc-13 ftbfs on mipsel:
[...]
Bootstrap comparison failure!
gcc/rust/rust-macro-builtins.o differs
gcc/rust/rust-session-manager.o differs
gcc/rust/rust-cfg-parser.o differs
gcc/rust/rust-lex.o differs
make[4]: *** [Makefile:30369: compare] Error 1
make[4]: Leaving directory '/<<PKGBUILDDIR>>/build'
make[3]: *** [Makefile:30349: stage3-bubble] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>/build'
make[2]: *** [Makefile:30412: bootstrap] Error 2
I'll ignore these for now, but please address this upstream.