TeamCity Plugin for Eclipse adds its icons to the Eclipse status bar.

Item Description
Displayed if you are not connected to a TeamCity server.
To connect, double-click this icon, or right-click it and then choose Log in on the context menu. For more information, see Logging on to the Build Server.

The following items are displayed when you are connected to the TeamCity server. The context menu of each icon provides access to all major actions of the TeamCity Plugin for Eclipse. You can:

The following items are displayed when you are connected to the TeamCity sever.
Item Description
Displayed if all builds from your watched projects are successful.
Displayed if at least one build of your watched projects has failed. 
Displayed if your personal remote build is successful.
Displayed if you have investigations assigned to you.
Displayed if your personal remote build has failed.