The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.01.10.04.42.20 kamil src/sbin/savecore/zopen.c,v 1.4 2017.01.10.05.04.31 nonaka src/sys/dev/pci/pcidevs,v 1.1276 2017.01.10.05.05.09 nonaka src/sys/dev/pci/pcidevs.h,v 1.1268 2017.01.10.05.05.09 nonaka src/sys/dev/pci/pcidevs_data.h,v 1.1267 2017.01.10.05.08.24 kamil src/tests/kernel/t_ptrace_wait.c,v 1.53 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2017.01.html#2017.01.10.05.08.24