ERROR | Test Failure: {"exception": {"message": "could not find element ID: community", "lineNumber": 841, "stack": "([object Object])@resource://mozmill/modules/controller.js:841\n()@resource://mozmill/modules/frame.js -> file:///home/cltbld/talos-slave/mozilla-central_fedora-debug_test-mozmill-all/build/mozmill/tests/firefox/testPrivateBrowsing/testStartStopPBMode.js:125\n((function () {pb.enabled = true;pb.stop();controller.assertJS(\"subject.allTabsRestored == true\", {allTabsRestored: controller.tabs.length == LOCAL_TEST_PAGES.length + 1});for (var i = 0; i < LOCAL_TEST_PAGES.length; i++) {controller.waitForPageLoad(controller.tabs.getTab(i));var elem = new elementslib.ID(controller.tabs.getTab(i), LOCAL_TEST_PAGES[i].id);controller.assertNode(elem);}controller.assertJS(\"subject.noTitleModifier == true\", {noTitleModifier: controller.window.document.title.indexOf(modifier) == -1});}))@resource://mozmill/modules/frame.js:530\n([object Object])@resource://mozmill/modules/frame.js:598\n([object Object])@resource://mozmill/modules/frame.js:641\n(\"/home/cltbld/talos-slave/mozilla-central_fedora-debug_test-mozmill-all/build/mozmill/tests/firefox\")@resource://mozmill/modules/frame.js:471\n(\"/home/cltbld/talos-slave/mozilla-central_fedora-debug_test-mozmill-all/build/mozmill/tests/firefox\")@resource://mozmill/modules/frame.js:647\n((function (dir, invokedFromIDE) {var runner = new Runner(new Collector, invokedFromIDE);runner.runTestDirectory(dir);runner.end();return true;}),[object Proxy])@resource://jsbridge/modules/server.js:164\n(\"5a625658-dd62-11df-8cd7-34159e18d752\",(function (dir, invokedFromIDE) {var runner = new Runner(new Collector, invokedFromIDE);runner.runTestDirectory(dir);runner.end();return true;}),[object Proxy])@resource://jsbridge/modules/server.js:168\n@:0\n@resource://jsbridge/modules/server.js:249\n", "fileName": "resource://mozmill/modules/controller.js"}}