Apparently Linux doesn't allow multiple arguments in shebang. Removing --harmony flag as it's currently unused anyway, and switching to Promise.longStackTraces().

lib/cli.js

@@ -2,12 +2,15 @@ var util = require('util')
 var os = require('os')
 
 var program = require('commander')
+var Promise = require('bluebird')
 
 var pkg = require('../package')
 var cliutil = require('./util/cliutil')
 var procutil = require('./util/procutil')
 var logger = require('./util/logger')
 
+Promise.longStackTraces()
+
 program
   .version(pkg.version)