How to debug Rust in Intellij idea?

You cannot debug Rust in IntelliJ, but CLion supports debugging. However CLion is not free.

Old question, but great news! https://blog.jetbrains.com/clion/2020/05/whats-new-in-intellij-rust/ Now it's VERY easy to debug Rust in IntelliJ, just download mentioned plugin and the rest is done before first usage.