how can we cut our CI times by 50–90% and reduce our dependency on #github actions, securely and cheaply enough for a large public #rustlang codebase?

we did exactly that for @servo by building a self-hosted runner system that does virtual machine orchestration under the hood, all for barely 400 EUR/month!

talk video:
https://www.youtube.com/watch?v=-W1mSXdlRqA

blog post:
https://www.azabani.com/2025/12/18/shoestring-web-engine-ci.html