How can I find out if a box is compatible with a specific version of Rust?

Question

If I find a box that I would like to use, how can I find out which versions of Rust mailboxes work as expected?

Answer 1

Right now, you are either reading the box documentation or checking it yourself. Many larger mailboxes test an older version of Rust in CI when they claim stability.

There is a proposed RFC that will add a version of Rust to the Cargo.toml file.