title: How to make TestNG print detail message about the failure
body: <p>My testNG failed with simple message:</p>
  <pre><code>[TestNG] [ERROR]
  Cannot instantiate class com.xyz.AbcTest
  </code></pre>
  <p>However I don't know why it cannot instantiate the class. How can I make TestNG print out the detail information or the error stack in this case?</p>