guestfish run hanging with qemu image

Hello there,
I would appreciate if someone can help me out.. I have been trying to install Cisco ASAv qemu image on EVE-NG (Network emulator based on Ubuntu) following steps documented here: http://www.eve-ng.net/documentation/howto-s/73-howto-add-cisco-asav
but it is not working properly.. Digging deeper, tried to run "libguestfs-test-tool" and here is what I am getting:
I tried to look for any solution for this "Alarm clock" message but didn't find any clue.. any suggestion:
****************************************************************************************************************
root@eve-ng:/opt/unetlab/addons/qemu/asav-941-200# libguestfs-test-tool
     ************************************************************
     * IMPORTANT NOTICE
     *
     * When reporting bugs, include the COMPLETE, UNEDITED
     * output below in your bug report.
     *
     ************************************************************
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
SELinux: sh: 1: getenforce: not found
guestfs_get_append: (null)
guestfs_get_autosync: 1
guestfs_get_backend: direct
guestfs_get_backend_settings: []
guestfs_get_cachedir: /var/tmp
guestfs_get_direct: 0
guestfs_get_hv: /usr/bin/qemu-system-x86_64
guestfs_get_memsize: 500
guestfs_get_network: 0
guestfs_get_path: /usr/lib/x86_64-linux-gnu/guestfs
guestfs_get_pgroup: 0
guestfs_get_program: libguestfs-test-tool
guestfs_get_recovery_proc: 1
guestfs_get_selinux: 0
guestfs_get_smp: 1
guestfs_get_tmpdir: /tmp
guestfs_get_trace: 0
guestfs_get_verbose: 1
host_cpu: x86_64
Launching appliance, timeout set to 600 seconds.
libguestfs: launch: program=libguestfs-test-tool
libguestfs: launch: version=1.32.2
libguestfs: launch: backend registered: unix
libguestfs: launch: backend registered: uml
libguestfs: launch: backend registered: libvirt
libguestfs: launch: backend registered: direct
libguestfs: launch: backend=direct
libguestfs: launch: tmpdir=/tmp/libguestfsFwxMjy
libguestfs: launch: umask=0022
libguestfs: launch: euid=0
libguestfs: [00011ms] begin building supermin appliance
libguestfs: [00011ms] run supermin
libguestfs: command: run: /usr/bin/supermin
libguestfs: command: run: \ --build
libguestfs: command: run: \ --verbose
libguestfs: command: run: \ --if-newer
libguestfs: command: run: \ --lock /var/tmp/.guestfs-0/lock
libguestfs: command: run: \ --copy-kernel
libguestfs: command: run: \ -f ext2
libguestfs: command: run: \ --host-cpu x86_64
libguestfs: command: run: \ /usr/lib/x86_64-linux-gnu/guestfs/supermin.d
libguestfs: command: run: \ -o /var/tmp/.guestfs-0/appliance.d
supermin: version: 5.1.14
supermin: package handler: debian/dpkg
supermin: acquiring lock on /var/tmp/.guestfs-0/lock
supermin: if-newer: output does not need rebuilding
libguestfs: [00123ms] finished building supermin appliance
libguestfs: [00131ms] begin testing qemu features
libguestfs: command: run: /usr/bin/qemu-system-x86_64
libguestfs: command: run: \ -display none
libguestfs: command: run: \ -help
libguestfs: command: run: /usr/bin/qemu-system-x86_64
libguestfs: command: run: \ -display none
libguestfs: command: run: \ -version
libguestfs: qemu version 2.5
libguestfs: command: run: /usr/bin/qemu-system-x86_64
libguestfs: command: run: \ -display none
libguestfs: command: run: \ -machine accel=kvm:tcg
libguestfs: command: run: \ -device ?
libguestfs: [01278ms] finished testing qemu features
[01279ms] /usr/bin/qemu-system-x86_64 \
    -global virtio-blk-pci.scsi=off \
    -nodefconfig \
    -enable-fips \
    -nodefaults \
    -display none \
    -machine accel=kvm:tcg \
    -cpu host \
    -m 500 \
    -no-reboot \
    -rtc driftfix=slew \
    -no-hpet \
    -global kvm-pit.lost_tick_policy=discard \
    -kernel /var/tmp/.guestfs-0/appliance.d/kernel \
    -initrd /var/tmp/.guestfs-0/appliance.d/initrd \
    -device virtio-scsi-pci,id=scsi \
    -drive file=/tmp/libguestfsFwxMjy/scratch.1,cache=unsafe,format=raw,id=hd0,if=none \
    -device scsi-hd,drive=hd0 \
    -drive file=/var/tmp/.guestfs-0/appliance.d/root,snapshot=on,id=appliance,cache=unsafe,if=none \
    -device scsi-hd,drive=appliance \
    -device virtio-serial-pci \
    -serial stdio \
    -device sga \
    -chardev socket,path=/tmp/libguestfsFwxMjy/guestfsd.sock,id=channel0 \
    -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \
    -append 'panic=1 console=ttyS0 udevtimeout=6000 udev.event-timeout=6000 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 TERM=xterm'
Alarm clock
****************************************************************************************************************