Ticket gets marked as 'Complete' (passed) when the package has a failing test

I created a failing test in autopkgtest to see what would happen... It turns out, bad things happen... The ticket was marked as completed instead of failed.

I added the following to tests/adt-run:

    def test_chris_changes(self):
        self.assertEqual('1', '2')

autopkgtest-subunit-stream contains:

test: dsc0t-adt-run
error: dsc0t-adt-run [ multipart
Content-Type: text/plain;charset=utf8
error
36
adt-run produced an unexpected result: "dsc0t-adt-run"0
]
test: dsc0t-pyflakes
successful: dsc0t-pyflakes [ multipart
Content-Type: text/plain;charset=utf8
stderr
0
Content-Type: text/plain;charset=utf8
stdout
0
]

17:32:26 fginther | oooh, I wonder if this package has multiple tests and we
17:32:45 fginther | we're only checking the return code of the last one.
17:33:03 fginther | because the pyflakes test passed