This is the last release that supports the 2021.1 IDEs. To receive plugin updates further, please upgrade your IDE to 2021.2.

New Features

• #7317 Enable WSL support by default. Now you can choose a WSL toolchain during project creation or in Preferences | Languages & Frameworks | Rust settings, which will be used for build and run via cargo, code formatting via rustfmt, on-the-fly code analysis via cargo check or clippy, code coverage via grcov, etc. Debugging works only in CLion and you need to configure a WSL toolchain in Preferences | Build, Execution, Deployment | Toolchains settings. Also, Valgring Memcheck and Profiling integrations are not supported yet.
  Note, we use UNC paths (\\wsl$\...) for WSL toolchains, so you need at least version 1903 of Windows 10

• #7488 Add debugger option to break on panic. The option is enabled by default. You can disable it via Break on panic option in Preferences | Build, Execution, Deployment | Debugger settings in case of any problem (by @Kobzol)

  GIF

• #7550 Support finding usages in child modules in Unused import inspection. Note, the inspection is disabled by default due to some false positives. You can enable it in inspection settings.

  

• #7805 Remove Extract dependency specification intention in favor of more generic Expand into separate table intention from TOML plugin

Performance Improvements

• #7818 Optimize macro expansion — now procedural macros are expanded in parallel

• #7841 Avoid IDE freeze in certain situations when invoking Remove quick-fixes or intentions on elements with syntax errors (by @Kobzol)

Fixes

• #7809 Use correct prelude for 2021 edition

• #7795 Fix parsing of const generic arguments and const generic defaults

• #7804 Generate generic bounds and where clauses when creating inherent impl items in Extract function refactoring (by @Kobzol)

• #7831 Don’t show the E0046 error for negative trait impls (by @Kobzol)

• #7806 Insert import at correct location during auto-import

• #7827 Fix that glob import can override named items in some cases

• #7819 Fix incorrect name resolution in some cases when there is both cfg-disabled and cfg-enabled mod with the same name

• #7811 Fix resolving asm! macro on nightly Rust

• #7824 Improve completion of macro 2.0, i.e. insert ! and proper braces (based on documentation) if needed

• #7823 Improve documentation rendering for macro 2.0 as well as external link generation and resolution

• #7834 Don’t highlight string literals in macros as exit points

• #7810 Fix showing completion autopopup when typing let mut with existing ident (let /*typing mut here*/foo = 1;)

• #7876 Fix Rustup availability check on WSL

• #7869 Reset “Standard library” path on switching on a WSL toolchain in Rust settings

Internal Improvements

• #7828 Move development of TOML plugin into intellij-community repository to simplify integration for other technologies. Note, the plugin is still free and open-source

Full set of changes can be found here