Issue
I'm using Fedora 35, and no matter what location I've tried for the Rust Toolchain in IntelliJ IDEA I get "Invalid toolchain location: can't find Cargo in..." I've tried /bin and many, many other locations. I prefer not to use rustup and would like to do this with the standard Fedora Rust installation.
Solution
It seems like it has to do with the sandbox effect of Flatpaks. I reinstalled IDEA from Fedora's Copr instead of the Flatpak and everything was read automatically.
Answered By - Ricky Kresslein Answer Checked By - Marie Seifert (WPSolving Admin)