JSONP failed deploy, after switching to free open-source plan

gistfile1.json

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         "name":"Error",
         "reason":"Error Creating Nodejitsu App!",
         "error":"deploy:nodejitsu:cant_create_app",
         "nodejitsu":{
            "err":{
               "message":"Subdomain chosen belongs to another user",
               "stack":"Error: Subdomain chosen belongs to another user\n    at module.exports (/root/nodejitsu/lib/nodejitsu/resources/app/controller/available.js:25:17)\n    at Resource._request (/root/nodejitsu/node_modules/resourceful/lib/resourceful/resource.js:184:13)\n    at Function.Resource.runAfterHooks (/root/nodejitsu/node_modules/resourceful/lib/resourceful/resource.js:93:12)\n    at Resource._request (/root/nodejitsu/node_modules/resourceful/lib/resourceful/resource.js:179:14)\n    at Couchdb.view (/root/nodejitsu/node_modules/resourceful/lib/resourceful/engines/couchdb/index.js:143:5)\n    at Request.cradle.Connection.request [as _callback] (/root/nodejitsu/node_modules/resourceful/node_modules/cradle/lib/cradle.js:213:9)\n    at Request.init.self.callback (/root/nodejitsu/node_modules/request/main.js:120:22)\n    at Request.EventEmitter.emit (events.js:99:17)\n    at Request.<anonymous> (/root/nodejitsu/node_modules/request/main.js:555:16)\n    at Request.EventEmitter.emit (events.js:96:17)",
               "appname":false,
               "subdomain":false,
               "checked":true,
               "domain":true
            },
            "status_code":500
         },
         "description":"Request failed",
         "stacktrace":[
            "Error: Request failed",
            "    at Request._callback (/root/nodejitsu-webhooks-api/lib/nodejitsu.js:72:31)",
            "    at Request.init.self.callback (/root/nodejitsu-webhooks-api/node_modules/request/main.js:122:22)",
            "    at Request.EventEmitter.emit (events.js:91:17)",
            "    at Request.<anonymous> (/root/nodejitsu-webhooks-api/node_modules/request/main.js:655:16)",
            "    at Request.EventEmitter.emit (events.js:115:20)",
            "    at IncomingMessage.Request.start.self.req.self.httpModule.request.buffer (/root/nodejitsu-webhooks-api/node_modules/request/main.js:617:14)",
            "    at IncomingMessage.EventEmitter.emit (events.js:115:20)",
            "    at IncomingMessage._emitEnd (http.js:366:10)",
            "    at HTTPParser.parserOnMessageComplete [as onMessageComplete] (http.js:149:23)"
         ]
      }
   },
   "created_at":"Fri Mar 08 2013 05:18:02 GMT+0000 (UTC)",
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      "owner":"afeld",
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               }
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            "on_failure":"never"
         }
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   },
   "package.json":{
      "author":"Aidan Feldman <aidan.feldman@gmail.com> (http://aidanfeldman.com)",
      "name":"jsonp",
      "homepage":"http://jsonp.jit.su",
      "description":"A simple JSONP proxy",
      "version":"0.0.0-33",
      "repository":{
         "type":"git",
         "url":"https://github.com/afeld/jsonp.git"
      },
      "dependencies":{
         "airbrake":"0.2.x",
         "ejs":"0.7.x",
         "express":"3.0.x",
         "json3":"3.2.x",
         "request":"2.9.x",
         "underscore":"1.3.x",
         "expect.js":"0.1.x",
         "mocha":"1.4.x"
      },
      "devDependencies":{
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         "grunt-mocha":"0.1.x",
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         "supertest":"0.2.x"
      },
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      },
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   "app_name":"jsonp",
   "rendered_at":"Fri Mar 08 2013 05:18:20 GMT+0000 (UTC)",
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   "err":null,
   "etc":{
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      "http_headers":{
         "content-type":"application/x-www-form-urlencoded",
         "accept":"*/*",
         "user-agent":"Ruby",
         "connection":"close",
         "host":"webhooks.nodejitsu.com",
         "content-length":"2445",
         "x-forwarded-for":"184.73.67.229",
         "x-forwarded-port":"55425",
         "x-forwarded-proto":"http"
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