Code review comment for lp:~allanlesage/uci-engine/coverage-extractor

The attempt to merge lp:~allanlesage/uci-engine/coverage-extractor into lp:uci-engine failed. Below is the output from the failed tests.

INFO:root:Creating a virtualenv to run under...
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 2339, in <module>
    main()
  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 825, in main
    symlink=options.symlink)
  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 985, in create_environment
    site_packages=site_packages, clear=clear, symlink=symlink))
  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 1193, in install_python
    writefile(site_filename_dst, SITE_PY)
  File "/usr/lib/python2.7/dist-packages/virtualenv.py", line 487, in writefile
    f.write(content.encode('utf-8'))
IOError: [Errno 28] No space left on device
INFO:root:virtualenv created in 0.10s.
Traceback (most recent call last):
  File "bin/called-by-tarmac.py", line 140, in <module>
    sys.exit(main())
  File "bin/called-by-tarmac.py", line 110, in main
    venv.install()
  File "/tmp/tarmac/branch.NK5zgD/bin/../testing/venv.py", line 139, in install
    path = create()
  File "/tmp/tarmac/branch.NK5zgD/bin/../testing/venv.py", line 53, in create
    subprocess.check_call(cmd, stdout=devnull)
  File "/usr/lib/python2.7/subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['virtualenv', '/dev/shm/venv-xZxs_5', '-p', 'python2.7']' returned non-zero exit status 1