Node Driver crashes on multi get

When you try to execute this code the application crashes:

var async = require("async");
var couchBase = require("couchbase");

var json = {
  "id1": {
    "id": "id1",
    "name": "Name 1"
  },

  "id2": {
    "id": "id2",
    "name": "Name 2"
  }
};

var config = {
  "host": "localhost",
  "port": 8091,
  "username": "Administrator",
  "password": "password",
  "bucket": "requests"
};

couchBase.connect(config, function(err, bucket) {
  if (err) {
    console.log("Unable to connect to Couchbase bucket [" + config.bucket + "]", err);
    process.exit(1);
  }

  console.log("Connected to Couchbase");

  var ids = [];
  var jsonDocs = [];
  for (var key in json) {
    if (json.hasOwnProperty(key)) {
      var jsonDoc = json[key];
      var id = jsonDoc.id;

      jsonDocs.push(jsonDoc);
      ids.push(id);
    }
  }

  bucket.get(ids, null, function(err, docs, metas) {
    if (err) {
      for (var j = 0; j < err.length; j++) {
        if (err[j].code != 13) {
          console.log({ err: err }, "Unable to get existing entries using multiple get. Error in element [" + j + "]");
          process.exit(1);
        }
      }
    }
    console.log("Checked all docs for existance");

    async.map(jsonDocs, function(doc, callback) {
      bucket.set(doc.id, doc, {}, function(err) {
        callback(err);
      });
    }, function(err, results) {
      if (err) {
        console.log("Unable to save all entries", err);
        process.exit(1);
      }

      console.log("Saved all entries");
      process.exit(0);
    });
  });
});


The question comes originally from:
http://stackoverflow.com/questions/14829946/couchbase-2-0-on-node-js-crashes-when-using-multiple-get
http://www.couchbase.com/forums/thread/couchbase-2-0-node-js-crash-mac-os-x-mountain-lion