The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2020.08.27.06.13.53 rillig src/usr.bin/make/arch.c,v 1.98 2020.08.27.06.13.53 rillig src/usr.bin/make/nonints.h,v 1.99 2020.08.27.06.13.53 rillig src/usr.bin/make/parse.c,v 1.264 2020.08.27.06.18.22 rillig src/usr.bin/make/job.h,v 1.46 2020.08.27.06.28.44 rillig src/usr.bin/make/dir.c,v 1.112 2020.08.27.06.28.44 rillig src/usr.bin/make/lst.c,v 1.43 2020.08.27.06.28.44 rillig src/usr.bin/make/lst.h,v 1.46 2020.08.27.06.31.46 rillig src/usr.bin/make/job.c,v 1.216 2020.08.27.06.31.46 rillig src/usr.bin/make/make.c,v 1.125 2020.08.27.06.53.57 rillig src/usr.bin/make/compat.c,v 1.130 2020.08.27.06.53.57 rillig src/usr.bin/make/dir.c,v 1.113 2020.08.27.06.53.57 rillig src/usr.bin/make/job.c,v 1.217 2020.08.27.06.53.57 rillig src/usr.bin/make/lst.c,v 1.44 2020.08.27.06.53.57 rillig src/usr.bin/make/lst.h,v 1.47 2020.08.27.06.53.57 rillig src/usr.bin/make/main.c,v 1.315 2020.08.27.06.53.57 rillig src/usr.bin/make/make.c,v 1.126 2020.08.27.06.53.57 rillig src/usr.bin/make/meta.c,v 1.101 2020.08.27.06.53.57 rillig src/usr.bin/make/parse.c,v 1.265 2020.08.27.06.53.57 rillig src/usr.bin/make/suff.c,v 1.118 2020.08.27.06.53.57 rillig src/usr.bin/make/targ.c,v 1.74 2020.08.27.07.00.29 rillig src/usr.bin/make/dir.c,v 1.114 2020.08.27.07.00.29 rillig src/usr.bin/make/job.c,v 1.218 2020.08.27.07.00.29 rillig src/usr.bin/make/lst.c,v 1.45 2020.08.27.07.00.29 rillig src/usr.bin/make/lst.h,v 1.48 2020.08.27.07.00.29 rillig src/usr.bin/make/main.c,v 1.316 2020.08.27.07.00.29 rillig src/usr.bin/make/meta.c,v 1.102 2020.08.27.07.00.29 rillig src/usr.bin/make/suff.c,v 1.119 2020.08.27.07.03.48 rillig src/usr.bin/make/lst.c,v 1.46 2020.08.27.07.03.48 rillig src/usr.bin/make/parse.c,v 1.266 2020.08.27.07.03.48 rillig src/usr.bin/make/suff.c,v 1.120 2020.08.27.09.57.33 hannken src/external/cddl/osnet/dist/uts/common/fs/zfs/zfs_vfsops.c,v 1.29 2020.08.27.09.57.33 hannken src/external/cddl/osnet/dist/uts/common/fs/zfs/zfs_vnops.c,v 1.70 2020.08.27.09.57.33 hannken src/external/cddl/osnet/dist/uts/common/fs/zfs/zfs_znode.c,v 1.34 2020.08.27.10.10.23 kardel src/sys/dev/mii/mii_physubr.c,v 1.94 2020.08.27.13.44.41 riastradh src/sys/net/if_wg.c,v 1.30 2020.08.27.14.00.01 christos src/tests/net/net/t_unix.c,v 1.21 2020.08.27.14.01.36 riastradh src/sys/kern/init_main.c,v 1.529 2020.08.27.14.01.36 riastradh src/sys/kern/kern_sysctl.c,v 1.265 2020.08.27.14.01.36 riastradh src/sys/rump/kern/lib/libcrypto/Makefile,v 1.21 2020.08.27.14.01.36 riastradh src/sys/rump/librump/rumpkern/Makefile.rumpkern,v 1.186 2020.08.27.14.11.57 riastradh src/sys/kern/kern_sysctl.c,v 1.266 2020.08.27.14.11.57 riastradh src/sys/rump/librump/rumpkern/Makefile.rumpkern,v 1.187 2020.08.27.14.11.57 riastradh src/sys/sys/systm.h,v 1.297 2020.08.27.14.14.00 fcambus src/share/man/man9/condvar.9,v 1.30 2020.08.27.14.14.00 fcambus src/share/man/man9/ltsleep.9,v 1.19 2020.08.27.14.14.00 fcambus src/share/man/man9/pci_configure_bus.9,v 1.20 2020.08.27.14.14.00 fcambus src/share/man/man9/pci_intr.9,v 1.27 2020.08.27.14.14.00 fcambus src/share/man/man9/timecounter.9,v 1.10 2020.08.27.14.14.00 fcambus src/share/man/man9/usbdi.9,v 1.35 2020.08.27.14.14.00 fcambus src/share/man/man9/uvm_map.9,v 1.12 2020.08.27.14.14.00 fcambus src/share/man/man9/vfsops.9,v 1.52 2020.08.27.15.28.53 riastradh src/distrib/sets/lists/base/shl.mi,v 1.898 2020.08.27.15.30.04 riastradh src/distrib/sets/lists/debug/ad.mips,v 1.75 2020.08.27.15.31.59 riastradh src/distrib/sets/lists/base/md.evbarm,v 1.19 2020.08.27.15.31.59 riastradh src/distrib/sets/lists/base/mi,v 1.1258 2020.08.27.15.31.59 riastradh src/distrib/sets/lists/base/shl.mi,v 1.899 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/comp/ad.aarch64,v 1.42 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/comp/ad.powerpc,v 1.98 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/comp/md.amd64,v 1.280 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/comp/md.i386,v 1.198 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/comp/shl.mi,v 1.339 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/comp/stl.mi,v 1.7 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/debug/ad.mips,v 1.76 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/debug/mi,v 1.331 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/debug/shl.mi,v 1.260 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/etc/mi,v 1.262 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/games/mi,v 1.56 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/ad.aarch64,v 1.7 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/ad.arm,v 1.17 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/ad.mips,v 1.16 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/md.amd64,v 1.88 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/md.i386,v 1.88 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/md.sparc64,v 1.11 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/modules/mi,v 1.139 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/tests/md.amd64,v 1.13 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/tests/mi,v 1.908 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xbase/shl.mi,v 1.89 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/md.alpha,v 1.15 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/md.amd64,v 1.52 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/md.cats,v 1.14 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/md.evbarm,v 1.28 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/md.i386,v 1.48 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/md.sgimips,v 1.13 2020.08.27.15.32.00 riastradh src/distrib/sets/lists/xdebug/shl.mi,v 1.55 2020.08.27.15.32.01 riastradh src/distrib/sets/lists/xetc/mi,v 1.38 2020.08.27.15.32.01 riastradh src/distrib/sets/lists/xserver/md.amd64,v 1.113 2020.08.27.15.32.01 riastradh src/distrib/sets/lists/xserver/md.evbarm,v 1.21 2020.08.27.15.32.01 riastradh src/distrib/sets/lists/xserver/mi,v 1.44 2020.08.27.15.32.37 riastradh src/distrib/sets/lists/tests/mi,v 1.909 2020.08.27.16.35.13 skrll src/sys/arch/arm/sunxi/sunxi_gpio.c,v 1.28 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2020.08.html#2020.08.27.16.35.13