read(4, "trying to open virtio-serial cha"..., 8192) = 112
write(2, "trying to open virtio-serial cha"..., 112trying to open virtio-serial channel '/dev/virtio-ports/org.libguestfs.channel.0'
commandrvf: stdout=n stderr=y) = 112
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}], 2, -1) = 1 ([{fd=4, revents=POLLIN}])
nanosleep({0, 1000000}, NULL)           = 0
read(4, " flags=0x0\r\ncommandrvf: udevadm "..., 8192) = 48
write(2, " flags=0x0\r\ncommandrvf: udevadm "..., 48 flags=0x0
commandrvf: udevadm --debug settle
) = 48
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}], 2, -1) = 1 ([{fd=4, revents=POLLIN}])
nanosleep({0, 1000000}, NULL)           = 0
read(4, "calling: settle\r\n", 8192)    = 17
write(2, "calling: settle\r\n", 17calling: settle
)     = 17
poll([{fd=5, events=POLLIN}, {fd=4, events=POLLIN}], 2, -1) = 1 ([{fd=5, revents=POLLIN}])
read(5, "\365\365_\365", 4)             = 4
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0} ---
+++ killed by SIGSEGV +++