And there was Inferno and Limbo. Probably the best system no one has ever heard of, a very much Oberon influenced virtual stack machine and OS. There once was a chance PlayStation could have adopted it, boy would that have changed the world.
https://deislabs.io/posts/still-rusting-one-year-later/
If you mean docker and kubernetes, docker is on the way out, the only thing left the image format, and just like Deislabs there are other CNCF members having new projects being done in Rust instead.
Terraform Prometheus/Grafana/Loki/Thanos Jaeger Kubernetes/etcd Docker Helm Velero Kolga
Just to name the ones we use at Helsinki City.
I also work for a training company where we teach these tools and Go - and we also train Rust. I see a perfect ecosystem of Go and Rust emerging.