exception thrown when tests fail with trial

[throwable-one]

from twisted.trial import unittest
from twisted.internet.defer import inlineCallbacks
from twisted.internet import defer, reactor

def badCode(d):
    raise Exception('boom!')
    d.callback(None)

class TestFailure(unittest.TestCase):

    @inlineCallbacks
    def testBadCode(self):
        d = defer.Deferred()
        reactor.callLater(0.1, badCode, d)
        yield d.addTimeout(0.2, reactor)

result File "c:\python37\lib\site-packages\twisted\plugins\teamcity_plugin.py", line 11, in getitem return self.value[key] TypeError: 'Exception' object is not subscriptable

[throwable-one]

https://youtrack.jetbrains.com/issue/PY-32694