The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2019.04.25.11.21.34 roy src/etc/rc.d/Makefile,v 1.102 2019.04.25.11.45.12 kamil src/tests/lib/libc/sys/t_ptrace_wait.c,v 1.112 2019.04.25.11.47.59 kamil src/tests/lib/libc/sys/t_ptrace_wait.c,v 1.113 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2019.04.html#2019.04.25.11.47.59