The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2022.05.29.12.15.00 martin src/lib/libcrypt/crypt-argon2.c,v 1.19 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2022.05.html#2022.05.29.12.15.00