IntelliJ Rust is an open-source Rust plugin for IntelliJ-based IDEs that strives to provide a full IDE experience:
New versions are released every two weeks and three times a year a unified overview post is released. I'll start the thread with recent updates but you can find older stuff here.
IntelliJ Rust Changelog #171
This regular update improves type inference, including unsized coercion, and provides builds for the upcoming 2022.2 releases of JetBrains IDEs:
IntelliJ Rust Changelog #172
This release contains fixes for long-standing issues related to terminal emulation in Cargo commands output. Also, now the plugin provides web references in string literals.