The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.03.22.19.36.04 kre src/lib/libc/gen/xsyslog.c,v 1.4
Log files can be found at:
http://releng.NetBSD.org/b5reports/i386/commits-2017.03.html#2017.03.22.19.36.04
