The main thread name and process name are the same thing on Linux!

On typical days, we software engineers are usually stuck due to head scratching bugs, instead of actually writing interesting software. I had made some small changes and suddenly our end-to-end tests were timing out, with no useful clues. The harness emits a crazy number of log lines, so digging through them was difficult. Fortunately, the problem was easily reproduceable on a local VM and with some piecemeal commenting I was able to isolate it to changing the thread name of the main thread, that I had done for some debugging information.