The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2019.09.23.12.00.57 christos src/lib/libp2k/p2k.c,v 1.71 2019.09.23.12.00.57 christos src/lib/libperfuse/ops.c,v 1.88 2019.09.23.12.00.57 christos src/lib/libperfuse/perfuse_priv.h,v 1.38 2019.09.23.12.00.57 christos src/lib/libpuffs/null.c,v 1.34 2019.09.23.12.00.57 christos src/lib/libpuffs/puffs.h,v 1.128 2019.09.23.12.00.57 christos src/lib/libpuffs/subr.c,v 1.28 2019.09.23.12.00.57 christos src/lib/librefuse/refuse.c,v 1.101 2019.09.23.12.00.57 christos src/sys/fs/puffs/puffs_msgif.h,v 1.85 2019.09.23.12.00.57 christos src/sys/fs/puffs/puffs_vfsops.c,v 1.122 2019.09.23.12.00.58 christos src/tests/fs/puffs/h_dtfs/dtfs_vfsops.c,v 1.4 2019.09.23.12.00.58 christos src/usr.sbin/puffs/mount_psshfs/fs.c,v 1.25 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2019.09.html#2019.09.23.12.00.58