Proxy crash on 2.5.0 dev
One of my proxies crashed after a network error to the pool resulted in a timeout. It returned the error

> ap: src/unix/getaddrinfo.c:91: uv__getaddrinfo_translate_error: Assertion `!"unknown EAI_* error code"' failed.



Crash occurred on Ubuntu 16.04 with gcc5 compiler. Happy to test reproducibility if necessary. 