The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2019.05.12.00.24.03 kre src/etc/rc.d/smtoff,v 1.2 2019.05.12.01.33.47 kre src/etc/defaults/rc.conf,v 1.149 2019.05.12.01.33.47 kre src/etc/rc.d/Makefile,v 1.103 2019.05.12.01.45.25 kre src/etc/defaults/rc.conf,v 1.150 2019.05.12.01.50.14 kre src/etc/rc.d/Makefile,v 1.104 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2019.05.html#2019.05.12.01.50.14