Not the default hence not well tested. AND you still have a Docker daemon running. Furthermore, last time I checked, Docker does not support user namespacing in a released version yet.

I maintain the "duh fix your script dummy" is not the right attitude. The author clearly states it's used for a build farm. That is bound to fail ...

I read "Docker daemon was using 100% CPU" to be the recurring incident; not a given script. And when that happens, it ends up cascading and stuff get OOM-killed before you know it.

Last I checked it isn't out yet and Podman offers this already.