np1sec::Conversation::fsck(): Assertion `*user_it != event_it' failed.

[inetic]

conversation.cc:1653: bool np1sec::Conversation::fsck(): Assertion *user_it != event_it' failed.`

This assertion fires when running the tests in tests/echo_chamber/tests.cc. Unfortunately, the particular test it happens in is random and the best chance of reproducing it is to run the full test suite at once (i.e. run the echo_chamber executable without the --run_test= argument).