When I run the following command to start Unicorn for a Sinatra app on my Vagrant box(ubuntu-12.04.2-server-i386) sudo unicorn -c unicorn.rb -E development -D -l 0.0.0.0:8080 I get the following error in the Unicorn logs. I, [2013-05-05T19:15:15.538805 #2357] INFO -- : listening on addr=0.0.0.0:8080 fd=5 F, [2013-05-05T19:15:15.541673 #2357] FATAL -- : error adding listener addr=/home/vagrant/tmp/
![Unicorn fails to start on Vagrant box due to Errno::EPERM](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)