[Libguestfs] How to make virt-builder use qemu:///system instead of qemu:///session

Greetings I am trying to create quick fedora20 vm's and using virt-builder for it. Currently when i run virt-builder on Fedora 21 it fails with below errors: <snip> [juno@dhcp207-208 ~]$ virt-builder fedora-20 --cache ~/.cache/virt-builder [ 1.0] Downloading: http://libguestfs.org/download/builder/fedora-20.xz [ 1.0] Planning how to build this image [ 1.0] Uncompressing [ 9.0] Opening the new disk libvirt: XML-RPC error : Cannot recv data: Connection reset by peer virt-builder: error: libguestfs error: could not connect to libvirt (URI = qemu:///session): Cannot recv data: Connection reset by peer [code=38 domain=7] If reporting bugs, run virt-builder with debugging enabled and include the complete output: virt-builder -v -x [...] </snip> Versions used: libguestfs-tools-c-1.28.2-3.fc21.x86_64 Fedora release 21 (Twenty One)[Host] libvirt-1.2.9.1-1.fc21.x86_64 I am trying virt-builder as non-root user. This user can connect through libvirt using qemu:///system. <snip> [juno@dhcp207-208 ~]$ virsh -c qemu:///system list Id Name State ---------------------------------------------------- </snip> but can't connect using qemu:///session <snip> [juno@dhcp207-208 ~]$ virsh -c qemu:///session error: failed to connect to the hypervisor error: Cannot recv data: Connection reset by peer </snip> Any help in this regard would be helpful. Regards Niranjan