"How to solve the "aborting due to worker thread panic" error message while compiling Firefox on a virtual machine" has moved
You can now find it at /posts/2017/how-to-solve-the-aborting-due-to-worker-thread-panic-error-message-while-compiling-firefox-on-a-virtual-machine/. If you don't do anything, you'll be redirected automatically (if your browser supports that).
Or you can update your bookmarks, if you still use such a thing!