Hi everyone!
Some time ago I’ve developed a rather simple tool to monitor history of rustup components availability: post on reddit, repo, webpage with the results.
As per discussion in rust-lang/rustup.rs, I propose to include the tool into the rust nursery and make it “official” 
I totally realize that first of all it requires some effort to maintain yet another tool (be it a cron-like job or a hook somewhere), and second of all most probably the tool needs some refactoring/reshaping to comply with the standards of how an official rust tool must look like. I don’t know if I can help somehow with the first item, but I’m eager to make any changes required to the tool itself 
Thanks!