Node's `npm` has a nice feature: You can list all packages and their dependencies. `cargo` has no such feature included, but `cargo-tree` delivers. Install it with
cargo install cargo-tree
and it gives you a nice tree of dependencies for all libraries in `Cargo.toml`:
$ cargo tree postgres v0.10.2 (file:///Volumes/git/rust/rust-postgres) ├── bufstream v0.1.1 ├── byteorder v0.4.2 ├── hex v0.1.0 ├── log v0.3.4 │ └── libc v0.2.4 ├── net2 v0.2.20 │ ├── cfg-if v0.1.0 │ ├── kernel32-sys v0.2.1 │ │ └── winapi v0.2.5 │ ├── libc v0.2.4 (*) │ ├── winapi v0.2.5 (*) │ └── ws2_32-sys v0.2.1 │ └── winapi v0.2.5 (*) └── phf v0.7.9 └── phf_shared v0.7.9