npm WARN optional dep failed, continuing imagemin-jpegtran@1.0.0
npm ERR! Darwin 13.3.0
npm ERR! argv "node" "/usr/local/bin/npm" "install"
npm ERR! node v0.10.32
npm ERR! npm  v2.0.0
npm ERR! path /Users/redacted/.npm/6e27d786-phy-npm-lodash-2-4-1-package-tgz.lock
npm ERR! code EEXIST
npm ERR! errno 47

npm ERR! EEXIST, open '/Users/redacted/.npm/6e27d786-phy-npm-lodash-2-4-1-package-tgz.lock'
File exists: /Users/redacted/.npm/6e27d786-phy-npm-lodash-2-4-1-package-tgz.lock
Move it away, and try again.