original exception:

ERROR:root:timed out waiting for action fill-unit to complete during fetch
Traceback (most recent call last):
  File "./assess_log_rotation.py", line 184, in main
    test_unit_rotation(client)
  File "./assess_log_rotation.py", line 35, in test_unit_rotation
    test_rotation(client, "/var/log/juju/unit-fill-logs-0.log", "unit-fill-logs-0", "fill-unit", "unit-size", "megs=300")
  File "./assess_log_rotation.py", line 48, in test_rotation
    client.action_do_fetch("fill-logs/0", fill_action, *args)
  File "/home/nate/juju-ci-tools/jujupy.py", line 523, in action_do_fetch
    return self.action_fetch(id, action)
  File "/home/nate/juju-ci-tools/jujupy.py", line 496, in action_fetch
    raise Exception("timed out waiting for action %s to complete during fetch" % action)
Exception: timed out waiting for action fill-unit to complete during fetch
exception while dumping logs:

ERROR:root:[Errno 17] File exists: './logs/1'
Traceback (most recent call last):
  File "./assess_log_rotation.py", line 192, in main
    dump_env_logs(client, bootstrap_host, log_dir)
  File "/home/nate/juju-ci-tools/deploy_stack.py", line 202, in dump_env_logs
    os.mkdir(machine_directory)
OSError: [Errno 17] File exists: './logs/1'
timeout 600.00s juju --show-log destroy-environment local --force -y
2015-05-22 02:19:32 INFO juju.cmd supercommand.go:37 running juju [1.24-beta5-utopic-amd64 gc]
2015-05-22 02:19:32 INFO juju.provider.local environprovider.go:41 opening environment "local"
2015-05-22 02:19:34 INFO juju.cmd supercommand.go:436 command finished

EXCEPTION CAUGHT:

ERROR:root:[Errno 17] File exists: './logs/1'
Traceback (most recent call last):
  File "./assess_log_rotation.py", line 192, in main
    dump_env_logs(client, bootstrap_host, log_dir)
  File "/home/nate/juju-ci-tools/deploy_stack.py", line 202, in dump_env_logs
    os.mkdir(machine_directory)
OSError: [Errno 17] File exists: './logs/1'

FAIL