The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2018.10.15.11.33.09 jmcneill src/sys/dev/acpi/acpi_timer.c,v 1.23 2018.10.15.11.35.03 jmcneill src/sys/arch/arm/acpi/acpi_machdep.c,v 1.2 2018.10.15.11.35.03 jmcneill src/sys/arch/arm/acpi/acpi_pci_machdep.c,v 1.1 2018.10.15.11.35.03 jmcneill src/sys/arch/arm/acpi/acpi_pci_machdep.h,v 1.1 2018.10.15.11.35.03 jmcneill src/sys/arch/arm/acpi/acpipchb.c,v 1.1 2018.10.15.11.35.03 jmcneill src/sys/arch/arm/acpi/files.acpi,v 1.2 2018.10.15.11.35.03 jmcneill src/sys/arch/arm/fdt/acpi_fdt.c,v 1.3 2018.10.15.11.35.42 jmcneill src/sys/arch/evbarm/conf/GENERIC64,v 1.47 2018.10.15.12.27.58 martin src/crypto/external/bsd/openssl/include/openssl/opensslconf.h,v 1.5 2018.10.15.12.45.52 martin src/crypto/external/bsd/openssl/include/openssl/opensslconf.h,v 1.6 2018.10.15.12.46.43 jmcneill src/sys/dev/acpi/acpi_mcfg.c,v 1.9 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2018.10.html#2018.10.15.12.46.43