The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/dtrace/x86/dis_tables.c,v 1.1 2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/dtrace/x86/dis_tables.h,v 1.1 2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/dtrace/x86/instr_size.c,v 1.1 2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/dtrace/x86/regset.h,v 1.1 2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/fbt/arm/fbt_isa.c,v 1.1 2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/fbt/arm/fbt_isa.h,v 1.1 2018.05.28.23.47.39 chs src/external/cddl/osnet/dev/fbt/x86/fbt_isa.c,v 1.1 2018.05.28.23.47.40 chs src/external/cddl/osnet/dev/fbt/x86/fbt_isa.h,v 1.1 2018.05.28.23.47.40 chs src/external/cddl/osnet/lib/libzfs_core/Makefile,v 1.1 2018.05.28.23.47.40 chs src/external/cddl/osnet/lib/libzfs_core/shlib_version,v 1.1 2018.05.29.01.09.49 kre src/external/cddl/osnet/dist/lib/libdtrace/common/mknames.sh,v 1.8 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2018.05.html#2018.05.29.01.09.49