Outside cros_sdk, the error is "failed to setup a virtualenv".
Inside, it's (I think) "no module called chromite"

(What is autotest_monkeypatcher?)

OUTSIDE CHROOT:

       Errors:
            * Hook script "./bin/test_lucifer" failed with code 1:
              Traceback (most recent call last):
                File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
                  "__main__", fname, loader, pkg_name)
                File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
                  exec code in run_globals
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/scripts/create_venv.py", line 46, in <module>
                  main()
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/scripts/create_venv.py", line 35, in main
                  print(venv.ensure())
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/venvlib.py", line 100, in ensure
                  self._check_or_create()
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/venvlib.py", line 108, in _check_or_create
                  self._create()
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/venvlib.py", line 117, in _create
                  logfile=logfile)
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/venvlib.py", line 209, in _create_venv
                  _log_check_call(command, logfile=logfile)
                File "/usr/local/google3/home/semenzato/chromiumos/infra_virtualenv/venv/cros_venv/venvlib.py", line 254, in wrapped_command
                  call_func(args, stdout=logfile, **kwargs)
                File "/usr/lib/python2.7/subprocess.py", line 535, in check_call
                  retcode = call(*popenargs, **kwargs)
                File "/usr/lib/python2.7/subprocess.py", line 522, in call
                  return Popen(*popenargs, **kwargs).wait()
                File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
                  errread, errwrite)
                File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
                  raise child_exception
              cros_venv.venvlib.VirtualenvMissingError: virtualenv is not installed (caused by [Errno 2] No such file or directory)
              ERROR: Failed to set up a virtualenv.

INSIDE CHROOT:
              
        Errors:
            * Hook script "./bin/test_lucifer" failed with code 1:
              ============================= test session starts ==============================
              platform linux2 -- Python 2.7.10, pytest-3.1.3, py-1.4.34, pluggy-0.4.0
              rootdir: /mnt/host/source/src/third_party/autotest/files/venv, inifile: pytest.ini
              plugins: cov-2.5.1, catchlog-1.2.2
              collected 26 items
              
              lucifer/autotest_unittest.py F........
              lucifer/eventlib_unittest.py .....
              lucifer/leasing_unittest.py ..........
              lucifer/loglib_unittest.py ..
              
              ---------- coverage: platform linux2, python 2.7.10-final-0 ----------
              Name                           Stmts   Miss Branch BrPart  Cover   Missing
              --------------------------------------------------------------------------
              lucifer/autotest.py               61     12      4      0    82%   63, 79-95, 124-129
              lucifer/autotest_unittest.py      32      1      0      0    97%   26
              lucifer/cmd/job_aborter.py        77     51     26      0    25%   53-64, 68-76, 91-98, 106-108, 116-118, 125, 134-136, 151-156, 165-166, 179-180, 197-200, 208-219
              lucifer/cmd/job_reporter.py       63     39      2      0    37%   48-64, 72-82, 87-92, 101-103, 119-123, 128-131, 139-140, 144, 148
              lucifer/handlers.py              148    118     44      0    16%   40-44, 47-54, 58, 62, 65-76, 79-82, 85-95, 98-107, 110-116, 124-131, 140-143, 149-159, 163-176, 180, 187-190, 195-207, 212-217, 226-230, 241-245, 256-258
              --------------------------------------------------------------------------
              TOTAL                            721    221     94      0    64%
              
              13 files skipped due to complete coverage.
              
              
              =========================== slowest 5 test durations ===========================
              0.16s call     lucifer/leasing_unittest.py::test_obtain_lease_with_error_removes_files
              0.15s call     lucifer/leasing_unittest.py::test_Lease__expired
              0.15s call     lucifer/leasing_unittest.py::test_Job_abort
              0.14s call     lucifer/leasing_unittest.py::test_obtain_lease_succesfully_removes_file
              0.14s call     lucifer/leasing_unittest.py::test_Job_abort_with_closed_socket
              =================================== FAILURES ===================================
              _______________________________ test_monkeypatch _______________________________
              
                  @pytest.mark.slow
                  def test_monkeypatch():
                      """Test monkeypatch()."""
                      common_file = subprocess32.check_output(
                              [sys.executable, '-m',
              >                'lucifer.cmd.test.autotest_monkeypatcher'])
              
              lucifer/autotest_unittest.py:25: 
              _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
              
              popenargs = (['/home/semenzato/.cache/cros_venv/venv-2.7.10-5e245727ed23dd962b0bb6d1c7a40f7d/bin/python', '-m', 'lucifer.cmd.test.autotest_monkeypatcher'],)
              kwargs = {}, timeout = None
              process = <subprocess32.Popen object at 0x7fbaf62db0d0>, output = ''
              unused_err = None, retcode = 1
              
                  def check_output(*popenargs, **kwargs):
                      r"""Run command with arguments and return its output as a byte string.
                  
                      If the exit code was non-zero it raises a CalledProcessError.  The
                      CalledProcessError object will have the return code in the returncode
                      attribute and output in the output attribute.
                  
                      The arguments are the same as for the Popen constructor.  Example:
                  
                      >>> check_output(["ls", "-l", "/dev/null"])
                      'crw-rw-rw- 1 root root 1, 3 Oct 18  2007 /dev/null\n'
                  
                      The stdout argument is not allowed as it is used internally.
                      To capture standard error in the result, use stderr=STDOUT.
                  
                      >>> check_output(["/bin/sh", "-c",
                      ...               "ls -l non_existent_file ; exit 0"],
                      ...              stderr=STDOUT)
                      'ls: non_existent_file: No such file or directory\n'
                      """
                      timeout = kwargs.pop('timeout', None)
                      if 'stdout' in kwargs:
                          raise ValueError('stdout argument not allowed, it will be overridden.')
                      process = Popen(stdout=PIPE, *popenargs, **kwargs)
                      try:
                          output, unused_err = process.communicate(timeout=timeout)
                      except TimeoutExpired:
                          process.kill()
                          output, unused_err = process.communicate()
                          raise TimeoutExpired(process.args, timeout, output=output)
                      retcode = process.poll()
                      if retcode:
              >           raise CalledProcessError(retcode, process.args, output=output)
              E           CalledProcessError: Command '['/home/semenzato/.cache/cros_venv/venv-2.7.10-5e245727ed23dd962b0bb6d1c7a40f7d/bin/python', '-m', 'lucifer.cmd.test.autotest_monkeypatcher']' returned non-zero exit status 1
              
              /home/semenzato/.cache/cros_venv/venv-2.7.10-5e245727ed23dd962b0bb6d1c7a40f7d/lib/python2.7/site-packages/subprocess32.py:638: CalledProcessError
              ----------------------------- Captured stderr call -----------------------------
              autotest_monkeypatcher: 2018-01-24 17:03:10,872:ERROR:autotest:_global_setup:60:Uncaught exception escaped Autotest setup
              Traceback (most recent call last):
                File "lucifer/autotest.py", line 56, in _global_setup
                  yield
                File "lucifer/autotest.py", line 47, in monkeypatch
                  _monkeypatch_body()
                File "lucifer/autotest.py", line 76, in _monkeypatch_body
                  importlib.import_module('chromite')
                File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
                  __import__(name)
              ImportError: No module named chromite
              ===================== 1 failed, 25 passed in 1.41 seconds ======================
              

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