Which revision of vibe.d exactly are you on and is it the normal libevent based driver or the win32 one?
This smells very much like #458. But that is supposed to be fixed already.
I am on Ubuntu 13.10, 64-bit. Using dub to get ~master. Just did a 'dub upgrade', and it still fails. Don't know how to check the exact version in use
I am making both libev and libevent available, and set both Havelibev and Havelibevent versions.