The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2020.11.08.02.31.24 rillig src/usr.bin/make/unit-tests/deptgt-makeflags.exp,v 1.3 2020.11.08.02.31.24 rillig src/usr.bin/make/unit-tests/deptgt-makeflags.mk,v 1.5 2020.11.08.02.33.18 rillig src/distrib/sets/lists/tests/mi,v 1.963 2020.11.08.02.37.22 rillig src/usr.bin/make/parse.c,v 1.433 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2020.11.html#2020.11.08.02.37.22