Ember testing: You have turned on testing mode, which disabled the run-loop's autorun

I am trying to write a simple Ember integration test and continue to get the frustrating run loop error despite using Ember.run. I've had a nightmare of a time trying to get this to work, if anyone could help me I'd be so grateful. Specifically, I can see the test sign in and begin loading the next page (as it should), but as soon as the test finishes I get that error. This is regarding the second test, the first passes (as nothing is async I believe).

import Ember from 'ember';
import startApp from 'jobs-tuftsdaily/tests/helpers/start-app';
import exists from 'jobs-tuftsdaily/tests/helpers/start-app';

var App;

module('Integration - Landing Page', {
    setup: function() {
        App = startApp();
    },
    teardown: function() {
       Ember.run(App, 'destroy');
    }
});

test('Should load content', function() {
  visit('/').then(function() {
    ok(exists("*"), "Found HTML!");
    ok(exists('label:eq(4)'), "Slug label on page");
  });
});

test('Should sign in test user', function() {
  Ember.run(function() {
    visit('/').andThen(function() {
      return fillIn("input[name=email]", "test@test.com");
    }).andThen(function() {
      return fillIn("input[type=password]", "password");
    }).andThen(function() {
      return click("button");
    }).andThen(function() {
      ok(1, "stupid test passed");
    });
  });
});