Cargo subcommand which shows structs dependencies. src-graph shows only dependencies between user-defined structs for now.
From crates.io
$ cargo install src-graph
From source code
$ git clone https://github.com/tamaroning/src-graph.git
$ cd src-graph
$ cagro install --path .
Run in your rust project
$ cargo src-graph
then generate an image from the dot file
$ dot -Tpng -o ./.src_graph/struct_deps.png ./.src_graph/struct_deps.dot