# Google Cloud Client Libraries for Rust - Pub/Sub
**WARNING:** this crate is under active development. We expect multiple breaking
changes in the upcoming releases. Testing is also incomplete, we do **not**
recommend that you use this crate in production. We welcome feedback about the
APIs, documentation, missing features, bugs, etc.
This crate contains traits, types, and functions to interact with [Pub/Sub].
Most applications will use the structs defined in the client module.
Receiving messages is not yet supported by this crate.
> This crate used to contain a different implementation, with a different
> surface. [@yoshidan](https://github.com/yoshidan) generously donated the crate
> name to Google. Their crate continues to live as [gcloud-pubsub].
[gcloud-pubsub]: https://crates.io/crates/gcloud-pubsub
[pub/sub]: https://cloud.google.com/pubsub