==> Installing grafana from grafana/grafana
==> Downloading https://github.com/grafana/grafana/archive/v3.0.4.tar.gz
Already downloaded: /Users/tux/Library/Caches/Homebrew/grafana-3.0.4.tar.gz
Warning: tried to stage empty resources array
==> go run build.go setup
==> go run build.go build
==> npm install
Last 15 lines from /Users/tux/Library/Logs/Homebrew/grafana/03.npm:
npm ERR!
npm ERR! Failed at the phantomjs-prebuilt@2.1.7 install script 'node install.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the phantomjs-prebuilt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node install.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs phantomjs-prebuilt
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls phantomjs-prebuilt
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /private/tmp/grafana-20160612-62765-8nsu8c/grafana-3.0.4/src/github.com/grafana/grafana/npm-debug.log

READ THIS: https://git.io/brew-troubleshooting
If reporting this issue please do so at (not Homebrew/brew):
https://github.com/grafana/homebrew-grafana/issues