First Rust Digger report: More than 80% of the crates link to their public VCS

In the Rust Digger project we collect data from crates, at this point it is only the meta-data from crates.io, but we plan to include data from the GitHub repositories.

However, this data is already useful for some minor contributions to Rust crates. Specifically, crates that have a link to their VCS are going to be easier to find if someone wants to contribute to them.

So we created a report listing all the crates that do NOT have such a link. See the first report.