test_terminated_backend test failure

The test_terminated_backend has been failing for me for a while, more often than not:
(...)

test_patch_with_missing_apply (tests.schema.patch.PatchTest) ... ok
test_patch_with_syntax_error (tests.schema.patch.PatchTest) ... ok
test_wb_apply_all_exploding_patch (tests.schema.patch.PatchTest) ... ok

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ERROR: test_terminated_backend (tests.databases.postgres.PostgresDisconnectionTestWithoutProxyTCPSockets)
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Traceback (most recent call last):
  File "/home/andreas/canonical/source/storm/staging/tests/mocker.py", line 102, in test_method_wrapper
    result = test_method()
  File "/home/andreas/canonical/source/storm/staging/tests/databases/postgres.py", line 588, in test_terminated_backend
    connection = self.database.connect()
  File "/home/andreas/canonical/source/storm/staging/storm/database.py", line 410, in connect
    return self.connection_factory(self, event)
  File "/home/andreas/canonical/source/storm/staging/storm/database.py", line 185, in __init__
    self._raw_connection = self._database.raw_connect()
  File "/home/andreas/canonical/source/storm/staging/storm/databases/postgres.py", line 360, in raw_connect
    raw_connection = psycopg2.connect(self._dsn)
OperationalError: fe_sendauth: no password supplied

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Ran 2584 tests in 636.439s

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

real 10m37.518s
user 0m17.745s
sys 0m1.952s