Build stuck in 'Awaiting Capacity' and then canceled in Netlify Free Plan

Hi, I’m using Netlify on the Free plan, and I encountered an issue with my builds. Here’s the situation:

  1. My build was stuck in the “Awaiting Capacity” state for some time. It seemed to be waiting for available resources, as my Free plan allows only 1 concurrent build.
  2. Later, the build was automatically canceled, and I’m unsure why this happened.

I’d like to know:

  • Why did my build get canceled automatically?
  • Is there a way to estimate how long I need to wait for a queued build to start under the Free plan?
  • Are there better ways to optimize or manage builds to avoid this issue (e.g., reducing build triggers, etc.)?

Thank you for your help!

Which site? I don’t see any details mentioned.