Dominik Csiba

A related issue, after pasting the dependenecies in `Cargo.toml` (copied from the book) ``` quickcheck = "0.9.2" quickcheck-macros = "0.9.2" ``` We get ``` > cargo test domain Updating crates.io...

Seems to be right. It is definitely an unexpected behavior. In my use case I had something like a graph, specifying parent nodes. Having `Node(parent=Node(parent=RootNode())) == Node(parent=RootNode())` is simply bamboozling....