Code review comment for lp:~vila/charms/precise/tarmac/cleanup-tests

The attempt to merge lp:~vila/charms/precise/tarmac/cleanup-tests into lp:~canonical-ci-engineering/charms/precise/tarmac/trunk failed. Below is the output from the failed tests.

PYTHONPATH=:hooks python -m unittest discover -s unit_tests

EEEEEEEE
======================================================================
ERROR: test_install (test_hooks.InstallTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_setup_ssh (test_hooks.InstallTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_basic_population (test_hooks.TestTemplatePopulation)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_branch_population (test_hooks.TestTemplatePopulation)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_credentials_population (test_hooks.TestTemplatePopulation)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_cron_population (test_hooks.TestTemplatePopulation)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_install (test_hooks.TestTemplatePopulation)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

======================================================================
ERROR: test_setup_ssh (test_hooks.TestTemplatePopulation)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/tarmac/branch.rWCjFT/unit_tests/test_hooks.py", line 59, in setUp
    'user': os.environ['USER'],
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'USER'

----------------------------------------------------------------------
Ran 8 tests in 0.050s

FAILED (errors=8)
make: *** [check] Error 1