I've been running sbws for about 5 days without checking on it. The first time the following exception appeared in my logs, I went from seeing a variety of thread names in the logs to only seeing a couple. This indicates to me this is (a/the) exception that has been causing sbws to fallback to just one measurement thread. (Later instances of this exception don't change anything) ``` 2018-10-21 11:09:45,926 ERROR Thread-6 scanner.py:259 - dispatch_worker_thread - Unhandled exception in worker thread Traceback (most recent call last): File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/core/scanner.py", line 257, in dispatch_worker_thread return measure_relay(*a, **kw) File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/core/scanner.py", line 171, in measure_relay dest = destinations.next() File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/lib/destination.py", line 251, in next self._perform_usability_test() File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/lib/destination.py", line 182, in _perform_usability_test possible_exits = [e for e in self._rl.exits File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/lib/destination.py", line 183, in <listcomp> if e.can_exit_to(dest.hostname, dest.port)] File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/lib/relaylist.py", line 123, in can_exit_to host = resolve(host)[0] File "/home/mtraudt/.pyenv/versions/3.5.6/envs/sbws-venv-3.5.6/lib/python3.5/site-packages/sbws/globals.py", line 71, in resolve for result in socket.getaddrinfo(hostname, 0): File "/home/mtraudt/.pyenv/versions/3.5.6/lib/python3.5/socket.py", line 733, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags): socket.gaierror: [Errno -2] Name or service not known 2018-10-21 11:09:45,926 ERROR Thread-10 scanner.py:314 - closure - Unhandled exception caught while measuring ViDiSrv: <class 'socket.gaierror'> [Errno -2] Name or service not known ``` Branch incoming.