Describe the bug

• Node.js version: 14.13
• OS & version: MacOS Catalina

The onCancel handler was attached after the promise settled

Actual behavior

This unhandled exception is not catch by a try/catch, but I see that it happen after a timeout error like this issue #1460

Checklist

• I have read the documentation.
• I have tried my code with the latest version of Node.js and Got.