On a crash, the loopback device also stays mounted and it can't be umounted (not any way that I can find at least)
For example: sudo losetup -a /dev/loop0: [0807]:2613376 (/tmp/vmbuilder_NclQw/disk0.img)
On a crash, the loopback device also stays mounted and it can't be umounted (not any way that I can find at least)
For example: _NclQw/ disk0.img)
sudo losetup -a
/dev/loop0: [0807]:2613376 (/tmp/vmbuilder