When you are browsing throw Jenkins and see testfailurestest failures, you like to see the Java code related to that issue, and you want to go through the stacktrace.
The Eclipse icon can appear on a number of places when you have the plugin installed and the Eclipse OpenFromExternalEvent plugin installed.
When you click on the icon behind the stacktrace it will open the console window.
In the console view, you can click on the several classes in the stacktrace. That helps you to navigate through the issue.
TIP: Enable 'auto format' for the Eclipse console view, that give better result in formatting of the stacktrace and making the classes clickable.
5 (May 28th)
Initial release to the community (up to version 1.3 was used only internally)