Unit test purpose_needs_anonymity_returns_true_by_default possible bug
dir/purpose_needs_anonymity_returns_true_by_default: Nov 09 17:25:37.223 [warn] purpose_needs_anonymity: Bug: Called with dir_purpose=0, router_purpose=0 (on Tor 0.3.0.0-alpha-dev d564187d) OK
Since the test returns OK, also printing the line "Bug: [...]" seams confusing.