I have been asked to do some debugging work with gnome-continuous, but as this only comes in qcow2 format for qemu and I do not want to install qemu at this time so this may be slightly problematic, though I have read here that one may be able to use qemu-img to convert a qcow2 image to a Virtual Box compatible one. I have tried install qemu-img with:
sudo apt-get install qemu-img
But it appears as though there isn't a package under that name currently in the repositories, so how do I install it and use it to convert the image? I am running Ubuntu GNOME 15.10 with GNOME 3.18.