REST Service in Rust

I just finished an example in java 8 about an implementation of the
Dijkstra algorithm to build the shortest path.

Implementation of the flyweight pattern. It permits decoupling the changing data from the static data (value objects) in instances to improve the performance in our design:

In my free time, I am learning rust. To improve, It is a good exercise to implement some katas in this language. In this case I implemented the first part (without resurrections) of the Game of life:

I just finish to type an scrapper example. Now, it is very simple version, but it seems works fine and it include a good test coverage.