[Libguestfs] virt-builder error

[pixelfairy]

to the point, maybe your supermin appliance should have its own
kernel? or bug ubuntu devs to make the kernel world readable.

more detail, as requested

Trying to build an image of ubuntu.

exact command

virt-builder ubuntu-14.04

exact output,

$ virt-builder ubuntu-14.04
[   0.0] Downloading: http://libguestfs.org/download/builder/ubuntu-14.04.xz
[   1.0] Creating disk image: ubuntu-14.04.img
[   1.0] Uncompressing: http://libguestfs.org/download/builder/ubuntu-14.04.xz
[  22.0] Running virt-resize to expand the disk to 4.2G
libguestfs: trace: set_verbose true
libguestfs: trace: set_verbose = 0
libguestfs: create: flags = 0, handle = 0x2428ec0, program = virt-resize
libguestfs: trace: add_drive "/tmp/vbsrcbe72ee.img" "readonly:true"
"format:raw" "protocol:file"
libguestfs: trace: add_drive = 0
libguestfs: trace: add_drive "ubuntu-14.04.img" "readonly:false"
"format:raw" "cachemode:unsafe"
libguestfs: trace: add_drive = 0
libguestfs: trace: launch
libguestfs: trace: get_tmpdir
libguestfs: trace: get_tmpdir = "/tmp"
libguestfs: trace: version
libguestfs: trace: version = <struct guestfs_version *>
libguestfs: trace: get_backend
libguestfs: trace: get_backend = "direct"
libguestfs: launch: program=virt-resize
libguestfs: launch: version=1.24.5
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/libguestfsySDyNP
libguestfs: launch: umask=0002
libguestfs: launch: euid=1000
libguestfs: command: run: /usr/bin/supermin-helper
libguestfs: command: run: \ --verbose
libguestfs: command: run: \ -f checksum
libguestfs: command: run: \ --host-cpu x86_64
libguestfs: command: run: \ /usr/lib/guestfs/supermin.d
supermin helper [00000ms] whitelist = (not specified)
supermin helper [00000ms] host_cpu = x86_64
supermin helper [00000ms] dtb_wildcard = (not specified)
supermin helper [00000ms] inputs:
supermin helper [00000ms] inputs[0] = /usr/lib/guestfs/supermin.d
supermin helper [00000ms] outputs:
supermin helper [00000ms] kernel = (none)
supermin helper [00000ms] dtb = (none)
supermin helper [00000ms] initrd = (none)
supermin helper [00000ms] appliance = (none)
checking modpath /lib/modules/3.13.0-24-generic is a directory
checking modpath /lib/modules/3.13.0-32-generic is a directory
checking modpath /lib/modules/3.13.0-33-generic is a directory
checking modpath /lib/modules/3.13.0-34-generic is a directory
picked kernel vmlinuz-3.13.0-34-generic
supermin helper [00000ms] finished creating kernel
supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d
supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/daemon.img.gz
supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/init.img
supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/udev-rules.img
supermin helper [00000ms] adding kernel modules
supermin helper [00028ms] finished creating appliance
libguestfs: checksum of existing appliance:
91a71afb6469a54392edcc914ff8a641915f545c14683266905f8f7ce855a8fd
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
libguestfs: [00033ms] begin building supermin appliance
libguestfs: [00033ms] run supermin-helper
libguestfs: command: run: /usr/bin/supermin-helper
libguestfs: command: run: \ --verbose
libguestfs: command: run: \ --copy-kernel
libguestfs: command: run: \ -f ext2
libguestfs: command: run: \ --host-cpu x86_64
libguestfs: command: run: \ /usr/lib/guestfs/supermin.d
libguestfs: command: run: \ --output-kernel /var/tmp/guestfs.br7JCi/kernel
libguestfs: command: run: \ --output-initrd /var/tmp/guestfs.br7JCi/initrd
libguestfs: command: run: \ --output-appliance /var/tmp/guestfs.br7JCi/root
supermin helper [00000ms] whitelist = (not specified)
supermin helper [00000ms] host_cpu = x86_64
supermin helper [00000ms] dtb_wildcard = (not specified)
supermin helper [00000ms] inputs:
supermin helper [00000ms] inputs[0] = /usr/lib/guestfs/supermin.d
supermin helper [00000ms] outputs:
supermin helper [00000ms] kernel = /var/tmp/guestfs.br7JCi/kernel
supermin helper [00000ms] dtb = (none)
supermin helper [00000ms] initrd = /var/tmp/guestfs.br7JCi/initrd
supermin helper [00000ms] appliance = /var/tmp/guestfs.br7JCi/root
checking modpath /lib/modules/3.13.0-24-generic is a directory
checking modpath /lib/modules/3.13.0-32-generic is a directory
checking modpath /lib/modules/3.13.0-33-generic is a directory
checking modpath /lib/modules/3.13.0-34-generic is a directory
picked kernel vmlinuz-3.13.0-34-generic
/usr/bin/supermin-helper: open: /boot/vmlinuz-3.13.0-34-generic:
Permission denied
libguestfs: command: run: rm
libguestfs: command: run: \ -rf /var/tmp/guestfs.br7JCi
libguestfs: trace: launch = -1 (error)
Fatal error: exception Guestfs.Error("/usr/bin/supermin-helper exited
with error status 1, see debug messages above")
libguestfs: trace: close
libguestfs: closing guestfs handle 0x2428ec0 (state 0)
libguestfs: command: run: rm
libguestfs: command: run: \ -rf /tmp/libguestfsySDyNP
virt-builder: error: virt-resize failed
pixel at akaran:~$ exit

guestfstools version 1.24.5-1 installed via apt from ubuntu repo
host ubuntu 14.04
kernel 3.13.0-34-generic x86_64
hardware  vmware-fusion 6.04 with vt enabled. (on mavericks)