text: // use aggdb
  db = db.getSiblingDB("aggdb");
  
  load('jstests/aggregation/data/articles.js');
  // original crash from ticket
  var r3 = db.runCommand({ aggregate:"article", pipeline:[
      { $project: {
          author: 1,
          _id: 0
      }},
      { $project: {
          Writer: "$author"
      }}
  ]});
  
  printjson(r3);
  
  var r3result = [
      {
          "Writer" : "bob"
      },
      {
          "Writer" : "dave"
      },
      {
          "Writer" : "jane"
      }
  ];
  
  assert.eq(r3.result, r3result, 's5012 failed');
  