The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2022.01.15.17.54.01 wiz src/share/man/man9/pfil.9,v 1.40 2022.01.15.18.02.33 jmcneill src/sys/dev/acpi/sdhc_acpi.c,v 1.19 2022.01.15.18.34.41 rillig src/usr.bin/make/arch.c,v 1.210 2022.01.15.18.34.41 rillig src/usr.bin/make/main.c,v 1.570 2022.01.15.18.34.41 rillig src/usr.bin/make/meta.c,v 1.190 2022.01.15.18.34.41 rillig src/usr.bin/make/nonints.h,v 1.238 2022.01.15.18.34.41 rillig src/usr.bin/make/parse.c,v 1.650 2022.01.15.18.34.41 rillig src/usr.bin/make/var.c,v 1.1001 2022.01.15.18.45.13 palle src/sys/arch/sparc64/doc/TODO,v 1.47 2022.01.15.19.05.23 rillig src/usr.bin/make/main.c,v 1.571 2022.01.15.19.05.23 rillig src/usr.bin/make/meta.c,v 1.191 2022.01.15.19.05.23 rillig src/usr.bin/make/nonints.h,v 1.239 2022.01.15.19.05.23 rillig src/usr.bin/make/var.c,v 1.1002 2022.01.15.19.13.08 rillig src/usr.bin/make/make.h,v 1.289 2022.01.15.19.13.08 rillig src/usr.bin/make/parse.c,v 1.651 2022.01.15.19.33.58 riastradh src/sys/miscfs/fdesc/fdesc_vnops.c,v 1.139 2022.01.15.19.34.07 rillig src/usr.bin/make/cond.c,v 1.326 2022.01.15.19.34.07 rillig src/usr.bin/make/main.c,v 1.572 2022.01.15.19.34.07 rillig src/usr.bin/make/meta.c,v 1.192 2022.01.15.19.34.11 riastradh src/sys/dev/dkwedge/dk.c,v 1.110 2022.01.15.19.38.05 gutteridge src/doc/roadmaps/desktop,v 1.6 2022.01.15.20.16.55 rillig src/usr.bin/make/unit-tests/varmod-ifelse.mk,v 1.18 2022.01.15.22.12.35 rillig src/tests/usr.bin/xlint/lint1/msg_193.c,v 1.15 2022.01.15.22.18.04 rillig src/usr.bin/make/main.c,v 1.573 2022.01.15.23.21.34 rillig src/tests/usr.bin/xlint/lint1/msg_193.c,v 1.16 2022.01.15.23.21.34 rillig src/tests/usr.bin/xlint/lint1/msg_193.exp,v 1.15 2022.01.15.23.21.34 rillig src/tests/usr.bin/xlint/lint1/msg_249.c,v 1.9 2022.01.15.23.21.34 rillig src/tests/usr.bin/xlint/lint1/msg_249.exp,v 1.7 2022.01.15.23.21.34 rillig src/usr.bin/xlint/lint1/cgram.y,v 1.379 2022.01.16.08.40.31 rillig src/tests/usr.bin/xlint/lint1/d_c99_bool.c,v 1.9 2022.01.16.08.40.31 rillig src/tests/usr.bin/xlint/lint1/d_c99_bool.exp,v 1.8 2022.01.16.09.38.04 rillig src/usr.bin/make/unit-tests/var-op-sunsh.mk,v 1.9 2022.01.16.09.41.28 rillig src/usr.bin/make/parse.c,v 1.652 2022.01.16.10.11.38 rillig src/tests/usr.bin/xlint/lint1/msg_193.c,v 1.17 2022.01.16.10.11.38 rillig src/tests/usr.bin/xlint/lint1/msg_193.exp,v 1.16 2022.01.16.10.30.45 rillig src/lib/libcurses/addbytes.c,v 1.60 2022.01.16.10.30.45 rillig src/lib/libcurses/ins_wstr.c,v 1.21 2022.01.16.10.38.59 rillig src/tests/lib/libc/inet/t_inet_addr.c,v 1.2 2022.01.16.10.45.17 rillig src/sys/net/lagg/if_lagg_lacp.c,v 1.13 2022.01.16.10.50.02 rillig src/sys/arch/aarch64/aarch64/pmap.c,v 1.125 2022.01.16.10.52.18 rillig src/lib/libpam/modules/pam_krb5/pam_krb5.c,v 1.30 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2022.01.html#2022.01.16.10.52.18