Comment 0 for bug 1645008

It sometimes passes and sometimes not:

while python3 -m testtools.run testresources.tests.test_optimising_test_suite.TestGraphStuff.testBasicSortTests; do true; done

will typically spin for a few seconds and the crash.

This seems to happen only with Python 3.x.

See for example here:

https://travis-ci.org/testing-cabal/testresources/jobs/177479870