The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2021.08.02.22.37.29 oster src/sys/dev/raidframe/raidframevar.h,v 1.22 2021.08.02.22.37.29 oster src/sys/dev/raidframe/rf_raid.h,v 1.50 2021.08.02.23.14.15 riastradh src/sys/external/bsd/drm2/linux/linux_reservation.c,v 1.14 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2021.08.html#2021.08.02.23.14.15