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In some cases the webdriver-manager crashes when running the e2e tests from within Jenkins.
It seems like the webUI (login page) is not loading/available fast enough but the tests
try to find the login fields (username/password) in order to send the credentials to login.
While webdriver/Protractor is supposed to wait for the UI/angular to finish loading it seems to me that this isn't really the case sometimes.
While doing some research I found a post where it was mentioned that Protractor does not always wait for Angular, just in some cases.
We might need to check/add some settings ("browser.waitForAngular();" or "browser.ignoreSynchronization = true;").

The webdriver-manager crash looks like this:

[18:52:59] I/launcher - Running 1 instances of WebDriver
[18:52:59] I/direct - Using ChromeDriver directly...
[HPM] POST /api/auth/check -> https://ceph-builders:41356/
[18:53:05] E/launcher - no such element: Unable to locate element: {"method":"css selector","selector":"*[name="username"]"}
  (Session info: headless chrome=72.0.3626.96)
  (Driver info: chromedriver=2.46.628388 (4a34a70827ac54148e092aafb70504c4ea7ae926),platform=Linux 3.10.0-693.el7.x86_64 x86_64)
[18:53:05] E/launcher - NoSuchElementError: no such element: Unable to locate element: {"method":"css selector","selector":"*[name="username"]"}
  (Session info: headless chrome=72.0.3626.96)
  (Driver info: chromedriver=2.46.628388 (4a34a70827ac54148e092aafb70504c4ea7ae926),platform=Linux 3.10.0-693.el7.x86_64 x86_64)
    at Object.checkLegacyResponse (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/error.js:546:15)
    at parseHttpResponse (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/http.js:509:13)
    at doSend.then.response (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/http.js:441:30)
    at process._tickCallback (internal/process/next_tick.js:68:7)
From: Task: WebDriver.findElement(By(css selector, *[name="username"]))
    at Driver.schedule (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/webdriver.js:807:17)
    at Driver.findElement (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/webdriver.js:1014:17)
    at onPrepare (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/protractor.conf.js:39:20)
    at q_1.Promise (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/protractor/built/util.js:46:49)
    at Function.promise (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:682:9)
    at Object.runFilenameOrFn_ (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/protractor/built/util.js:38:16)
    at plugins_.onPrepare.then (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/protractor/built/runner.js:98:27)
    at _fulfilled (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:834:54)
    at /home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:863:30
    at Promise.promise.promiseDispatch (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:796:13)
From: Task: WebElement.clear()
    at Driver.schedule (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/webdriver.js:807:17)
    at WebElementPromise.schedule_ (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/webdriver.js:2010:25)
    at WebElementPromise.clear (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/selenium-webdriver/lib/webdriver.js:2351:17)
    at onPrepare (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/protractor.conf.js:39:53)
    at q_1.Promise (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/protractor/built/util.js:46:49)
    at Function.promise (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:682:9)
    at Object.runFilenameOrFn_ (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/protractor/built/util.js:38:16)
    at plugins_.onPrepare.then (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/protractor/built/runner.js:98:27)
    at _fulfilled (/home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:834:54)
    at /home/jenkins-build/build/workspace/ceph-dashboard-pull-requests/src/pybind/mgr/dashboard/frontend/node_modules/q/q.js:863:30
[18:53:05] E/launcher - Process exited with error code 199
An unexpected error occurred: undefined