Hubot Heroku Error

gistfile1.txt

       > node-expat@1.4.0 install /tmp/build_29jklg8iuk0q1/node_modules/hubot/node_modules/node-xmpp/node_modules/node-expat
       > node-waf configure build
       
       
       > node-expat@1.4.0 install /tmp/build_29jklg8iuk0q1/node_modules/hubot/node_modules/wobot/node_modules/node-xmpp/node_modules/node-expat
       > node-waf configure build
       
       npm ERR! error installing hubot-scripts@1.1.3 Error: Unsupported
       npm ERR! error installing hubot-scripts@1.1.3     at checkEngine (/tmp/node-npm-77lk/lib/install.js:493:14)
       npm ERR! error installing hubot-scripts@1.1.3     at Array.0 (/tmp/node-npm-77lk/node_modules/slide/lib/bind-actor.js:15:8)
       npm ERR! error installing hubot-scripts@1.1.3     at LOOP (/tmp/node-npm-77lk/node_modules/slide/lib/chain.js:15:13)
       npm ERR! error installing hubot-scripts@1.1.3     at chain (/tmp/node-npm-77lk/node_modules/slide/lib/chain.js:20:4)
       npm ERR! error installing hubot-scripts@1.1.3     at installOne_ (/tmp/node-npm-77lk/lib/install.js:471:3)
       npm ERR! error installing hubot-scripts@1.1.3     at installOne (/tmp/node-npm-77lk/lib/install.js:411:3)
       npm ERR! error installing hubot-scripts@1.1.3     at /tmp/node-npm-77lk/lib/install.js:347:9
       npm ERR! error installing hubot-scripts@1.1.3     at /tmp/node-npm-77lk/node_modules/slide/lib/async-map.js:54:35
       npm ERR! error installing hubot-scripts@1.1.3     at Array.forEach (native)
       npm ERR! error installing hubot-scripts@1.1.3     at /tmp/node-npm-77lk/node_modules/slide/lib/async-map.js:54:11
       Checking for program g++ or c++          : /usr/bin/g++ 
       Checking for program cpp                 : /usr/bin/cpp 
       Checking for program ar                  : /usr/bin/ar 
       Checking for program ranlib              : /usr/bin/ranlib 
       npm ERR! error rolling back hubot-scripts@1.1.3 Error: ENOTEMPTY, Directory not empty '/tmp/build_29jklg8iuk0q1/node_modules/hubot-scripts'
       Checking for g++                         : ok  
       npm ERR! Unsupported
       npm ERR! Not compatible with your version of node/npm: wolfram@0.1.0
       npm ERR! Required: {"node":"~v0.4.11"}
       npm ERR! Actual:   {"npm":"1.0.94","node":"0.4.7"}
       npm ERR! 
       npm ERR! System Linux 2.6.32-316-ec2
       npm ERR! command "/tmp/node-node-Bv4G/bin/node" "/tmp/node-npm-77lk/cli.js" "install"
       npm ERR! cwd /tmp/build_29jklg8iuk0q1
       npm ERR! node -v v0.4.7
       npm ERR! npm -v 1.0.94
       npm ERR! code ENOTSUP
       Checking for node path                   : not found 
       Checking for node prefix                 : ok /tmp/node-node-Bv4G 
       Checking for header expat.h              : Checking for program g++ or c++          : /usr/bin/g++ 
       Checking for program cpp                 : /usr/bin/cpp 
       Checking for program ar                  : /usr/bin/ar 
       Checking for program ranlib              : /usr/bin/ranlib 
       yes 
       Checking for g++                         : ok  
       Checking for node path                   : not found 
       Checking for node prefix                 : ok /tmp/node-node-Bv4G 
       Checking for header expat.h              : 'configure' finished successfully (0.201s)
       Waf: Entering directory `/tmp/build_29jklg8iuk0q1/node_modules/hubot/node_modules/node-xmpp/node_modules/node-expat/build'
       [1/2] cxx: node-expat.cc -> build/default/node-expat_1.o
       yes 
       'configure' finished successfully (0.153s)
       Waf: Entering directory `/tmp/build_29jklg8iuk0q1/node_modules/hubot/node_modules/wobot/node_modules/node-xmpp/node_modules/node-expat/build'
       [1/2] cxx: node-expat.cc -> build/default/node-expat_1.o
       npm ERR! 
       npm ERR! Additional logging details can be found in:
       npm ERR!     /tmp/build_29jklg8iuk0q1/npm-debug.log
       npm not ok
       [2/2] cxx_link: build/default/node-expat_1.o -> build/default/node-expat.node
       Waf: Leaving directory `/tmp/build_29jklg8iuk0q1/node_modules/hubot/node_modules/node-xmpp/node_modules/node-expat/build'
       'build' finished successfully (0.347s)
       [2/2] cxx_link: build/default/node-expat_1.o -> build/default/node-expat.node
       Waf: Leaving directory `/tmp/build_29jklg8iuk0q1/node_modules/hubot/node_modules/wobot/node_modules/node-xmpp/node_modules/node-expat/build'
       'build' finished successfully (0.334s)
 !     Failed to install dependencies with npm
 !     Heroku push rejected, failed to compile Node.js app