The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the first successful build:
2024.01.02.22.35.22 kre src/sys/sys/rbtree.h 1.10 2024.01.02.22.35.26 kre src/usr.sbin/tprof/tprof_top.c 1.10 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2024.01.html#2024.01.02.22.35.26