I've encountered an intermittent segfault while running the couchbase-python-client unit tests. Initially I thought it was related to private changes I made to the client code, but it also appears to happen running from the couchbase-python-client master. It's hard to tell if it's a specific piece of functionality that is crashing, but it appears to happen pretty often on the 'bad_host' test. This is the place it segfaults:
Have only just spotted this, so not sure how easy it is to reproduce outside this test.