The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2018.11.20.15.16.43 prlw1 src/sys/dev/pci/ahcisata_pci.c,v 1.45 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2018.11.html#2018.11.20.15.16.43