A current limitation of Unity’s Build Automation platform is that they don’t provide any way to force timeout cloud builds.
So, if a build unexpectedly stalls without failing, unless you notice and manually cancel it, you can wind up with it running for many hours unnecessarily, burning your build minutes, and costing you money!
To help with this, we built a tool to let you automate forced timeouts of Unity builds if they’ve either been queued for a set time but not started, or been “building” for way longer than would be normal.

It’s easy to toggle this on for your existing Unity connection. Check out the docs to get started.