with main you may be asked to rebase your changes. Run ./mach fmt and ./mach test-tidy on your change. Commits should be as small as possible, while ensuring that each commit is correct independently ask for a review in the Servo chat.Add tests relevant to the fixed bug or new feature. For a DOM change this will usually be a web platform test; for layout, a reftest. See our testing guide for more information remote. Next, create a new remote named upstream that points at servo/servo . Starting a new change Update your main branch to the latest upstream changes. Next, create a new branch based on the main