The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2020.12.12.03.03.14 pgoyette src/distrib/sets/lists/debug/mi,v 1.344 2020.12.12.03.03.14 pgoyette src/distrib/sets/lists/tests/mi,v 1.989 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2020.12.html#2020.12.12.03.03.14