The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2020.06.12.15.25.26 roy src/sys/compat/netinet6/nd6.h,v 1.1 2020.06.12.15.34.20 thorpej src/sys/dev/cardbus/cardbus.c,v 1.110 2020.06.12.15.34.20 thorpej src/sys/dev/ic/ath.c,v 1.131 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2020.06.html#2020.06.12.15.34.20