Job found still running after platform shutdown

When I'm coding in Eclipse, suddenly a popup window displayed. And it's saying "SWT crashed" such things. Then Eclipse doesn't respond any more.

I tried restarting Eclipse several times, but it always stop and exit before reaching 50% of the loading progress bar.

To get a friendly error message, I opened command line and run "eclipsec.exe", now the long exception is shown:

Job found still running after platform shutdown. Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.Workbench



The solution is to delete file workspace/.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi