This is actually rather easy: crate web API provides a json
with all the versions, for example:
https://crates.io/api/v1/crates/cargo-c/versions
(Bitbake rev: f6c2755db9a1f88c8534193b420fa31d135945e6)
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>