Pubsub unit test hangs intermittently

[tseaver]

See: https://circleci.com/gh/GoogleCloudPlatform/google-cloud-python/6432

if [[ -n $(grep pubsub ~/target_packages) ]]; then
  nox -f pubsub/nox.py
fi

nox > Running session default
nox > virtualenv /var/code/gcp/.nox/default
nox > chdir /var/code/gcp/pubsub
nox > pip install --upgrade mock pytest pytest-cov ../api_core ../core
nox > pip install --upgrade -e .
nox > py.test --quiet --cov-append --cov-report= --cov=google.cloud.pubsub --cov=google.cloud.pubsub_v1 --cov-config=.coveragerc tests/unit
........................................................................ [ 28%]
........................................................................ [ 57%]
........................................................................ [ 86%]
..................................                                       [100%]


250 passed in 4.14 seconds
nox > Session default successful. :)
nox > Running session unit(py='2.7')
nox > virtualenv /var/code/gcp/.nox/unit-2-7 -p python2.7
nox > chdir /var/code/gcp/pubsub
nox > pip install --upgrade mock pytest pytest-cov ../api_core ../core
nox > pip install --upgrade -e .
nox > py.test --quiet --cov-append --cov-report= --cov=google.cloud.pubsub --cov=google.cloud.pubsub_v1 --cov-config=.coveragerc tests/unit
........................................................................ [ 28%]
...............................................................Too long with no output (exceeded 10m0s)

[theacodes]

That's the unit test, is it not?

[tseaver]

@jonparrott Yes. I updated the issue title when I figured that out (which is when I bumped the priority, too).

[tseaver]

Oops, looks like I PEBKAC'ed the save of that change until just now. :(

[theacodes]

I've been running the tests over and over for like half an hour now and can't reproduce this yet.