panic: trap type 6, code=0, pc=ffffffff82e14588
Starting stack trace...
panic(ffffffff8344cfd2) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80003acfcc80) at kerntrap+0x2fb
alltraps_kern_me
ltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000380d9250,fffffd806d57c120,ffff80003acfce60) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimes(ffff8000380d9250,ffff80003acfcfa0,ffff80003acfcef0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2813
syscall(ffff80003acfcfa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003acfcfa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7693adc3e20, count: 250
End of stack trace.

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 0fee9609-1d66-d0cb-3385-b9d53e0469ef
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f26f0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.67
boot> set $lines = 0
set: syntax error
boot>