The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2016.11.03.11.20.45 kamil src/tests/kernel/t_ptrace.c,v 1.4 2016.11.03.11.32.15 pgoyette src/sys/compat/common/Makefile.sysio,v 1.5 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2016.11.html#2016.11.03.11.32.15