Intellij reports Rust toolchain not installed, even though I just installed it

[gretchenfrage]

I've posted this on Stack Overflow, but I figured I'll crosspost here since this community will probably know more about Rust in particular.

https://stackoverflow.com/questions/48455832/intellij-reports-rust-toolchain-not-installed-even-though-i-just-installed-it

I'm completely new to rust, and really baffled, so I would really appreciate some tips.

Thanks!