Hi, Spanky from Crate.io here. We still maintain the PyPI portion of the site at https://crate.io/packages
As for crates.io, I guess their entitled to choose their own name & domain, but I admit it is confusing.
Might end up being a source of confusion for you guys, as the package manager for a major language will have much more mindshare than a database.
we're good friends with the original owner "dstufft" and took over the domain after he took over an official pypi position (more than a year ago). read his own blog post: https://caremad.io/2014/03/crate-io-new-ownership/