History.js buildr error

buildr_error

$ coffee buildr.coffee 
The "sys" module is now called "util". It should have a similar interface.
Error: require.paths is removed. Use node_modules folders, or the NODE_PATH environment variable instead.
    at Function.<anonymous> (module.js:376:11)
    at Object.<anonymous> (/Users/seanadkinson/git/tmp/history.js/node_modules/buildr/node_modules/less-bal/lib/less/index.js:5:8)
    at Module._compile (module.js:432:26)
    at Object..js (module.js:450:10)
    at Module.load (module.js:351:31)
    at Function._load (module.js:310:12)
    at Module.require (module.js:357:17)
    at require (module.js:368:17)
    at Object.<anonymous> (/Users/seanadkinson/git/tmp/history.js/node_modules/buildr/lib/buildr.coffee:15:10)
    at Object.<anonymous> (/Users/seanadkinson/git/tmp/history.js/node_modules/buildr/lib/buildr.coffee:928:4)