The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2021.04.20.23.19.53 rillig src/external/bsd/compiler_rt/lib/clang/lib/netbsd/syms.mk,v 1.4 2021.04.20.23.30.35 rillig src/tests/usr.bin/xlint/lint1/Makefile,v 1.48 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2021.04.html#2021.04.20.23.30.35