How to use the command `rustup run` (with examples)

The rustup run command allows you to run a command with an environment specifically configured for a given Rust toolchain. It provides a convenient way to switch between different versions of Rust and manage the dependencies for your projects.

Use case 1: Run a command using a given Rust toolchain

rustup run <toolchain> <command>

In this use case, you can specify a particular Rust toolchain and run a command using that toolchain. The <toolchain> argument refers to the specific version of Rust you want to use, and the <command> argument represents the command you want to execute.

Motivation

Using rustup run with a specific toolchain is beneficial when you need to test your code against different versions of Rust. It allows you to ensure that your project works as expected across different Rust toolchain versions.

Explanation

• <toolchain>: Specifies the Rust toolchain you want to use. You can choose from various toolchains installed on your system using rustup toolchain list.
• <command>: Represents the command you want to execute with the chosen Rust toolchain.

Example output

Let’s assume you have two different versions of Rust toolchain installed on your system: stable and nightly. To compile and run your project using the stable toolchain, you can use the following command:

rustup run stable cargo run

This command will use the stable toolchain to execute the cargo run command, which builds and runs your Rust project.

Conclusion

The rustup run command is a powerful tool that allows you to run commands using a specific Rust toolchain. It simplifies managing different versions of Rust and ensures your projects work correctly across different toolchains. By understanding the use cases and examples provided in this article, you can effectively utilize rustup run in your Rust development workflow.