The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.02.22.02.42.53 kamil src/etc/mtree/NetBSD.dist.tests,v 1.143 2017.02.22.02.58.31 maya src/lib/Makefile,v 1.250 2017.02.22.03.02.55 ozaki-r src/sys/netinet6/nd6.c,v 1.228 2017.02.22.03.02.55 ozaki-r src/sys/netinet6/nd6.h,v 1.83 2017.02.22.03.02.55 ozaki-r src/sys/netinet6/nd6_rtr.c,v 1.132 2017.02.22.03.03.37 ozaki-r src/tests/net/ndp/t_ra.sh,v 1.25 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2017.02.html#2017.02.22.03.03.37