The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2020.12.28.11.19.01 rillig src/tests/usr.bin/xlint/lint1/Makefile,v 1.19 2020.12.28.11.19.01 rillig src/tests/usr.bin/xlint/lint1/d_cvt_constant.exp,v 1.1 2020.12.28.11.19.01 rillig src/tests/usr.bin/xlint/lint1/t_integration.sh,v 1.8 2020.12.28.11.40.54 rillig src/distrib/sets/lists/tests/mi,v 1.998 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2020.12.html#2020.12.28.11.40.54