Available disk space on this host:
    Filesystem      Size  Used Avail Use% Mounted on
    /dev/sda1        38G  4.4G   32G  13% /
    none            4.0K     0  4.0K   0% /sys/fs/cgroup
    udev            996M  4.0K  996M   1% /dev
    tmpfs           202M  960K  201M   1% /run
    none            5.0M     0  5.0M   0% /run/lock
    none           1007M  148K 1006M   1% /run/shm
    none            100M   28K  100M   1% /run/user
    /dev/sr0        964M  964M     0 100% /media/test/Ubuntu 14.04 LTS amd64
Setting up the host
... this takes a few seconds (logs at logs/devstack-gate-setup-host.txt.gz)
Setting up the workspace
... this takes 3 - 5 minutes (logs at logs/devstack-gate-setup-workspace-new.txt.gz)
Running gate_hook
Job timeout set to: 113 minutes
Traceback (most recent call last):
  File "./test-matrix.py", line 21, in <module>
    import yaml
ImportError: No module named yaml
ERROR: the main setup script run by this job failed - exit code: 1
    please look at the relevant log files to determine the root cause
Cleaning up host
... this takes 3 - 4 minutes (logs at logs/devstack-gate-cleanup-host.txt.gz)
Build step 'Execute shell' marked build as failure
Finished: FAILURE