I wanted to give a headsup that we're seeing out of space issues on the autobuilder.
The cause is the tmpfs change for qemu images we added recently. It appears 'someone'
forgot to remove the files from the tmpfs after testing completed. This is the cause
of the space errors on debian8 in particular. Was a bit puzzled for a while as it
had plenty of space!
I'll work out a patch to clean up the files after runqemu completes! Just wanted
to ensure people knew the reason and that it should get fixed soon. It has
implications for backporting those patches to other releases.