The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2020.11.13.17.19.06 sjg src/distrib/sets/lists/tests/mi,v 1.968 2020.11.13.17.39.06 martin src/usr.sbin/sysinst/Makefile.inc,v 1.38 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2020.11.html#2020.11.13.17.39.06