You can use the `cargo graph` [0] command to get a graphviz view of the dependency graph. The `Cargo.lock` file which Cargo generates should also contain all the information you want in machine-readable form.
If you look at https://joindiaspora.com/statistics, you'll actually notice that "Registrations" are "Closed". I guess that means that this specific "pod" is full and you need to find a different "pod"?