Solana: I have a critical problem with “Anchor building” I can see the following error

A Critical Issue with Anchor Build on Solana: Unable to Compile with Rust

As a developer working with the Solana blockchain, you are probably no stranger to the importance of creating and maintaining a reliable and efficient system. However, a critical issue has arisen during the process of creating an anchor program for Solana. In this article, we will look at the error message that prevents developers from successfully compiling their projects.

The Error: Solana-Program package v2.1.9 cannot be created

When you run cargo build or similar commands to compile a Solana project, you will encounter an error that points to the Rust compiler (rustc). Specifically, it appears that the solana-program package is incompatible with the current version of the Rust compiler.

The problem is that Rust 1.75.0-dev (the currently active version) does not support building packages like solana-program using the rustc compiler. Instead, you need to use a newer version of the Rust compiler, such as 1.79.0 or newer.

Why this matters

The inability to build packages using rustc is a known issue that has been reported by developers and maintainers. It is essential to keep your Rust compiler up to date to ensure compatibility with the Solana package manager.

How ​​to fix it

To fix this error, you have a few options:

• Upgrade your Rust compiler: Make sure you are using the latest version of the Rust compiler (1.79.0 or newer). You can do this by running rustup update and then upgrading to the desired version.

• Use Cargo version control: Instead of specifying a particular Rust version, use Cargo’s version control mechanism to ensure compatibility. You can set the Cargo.toml file to include the latest version:

[package]
name = "sole-program"
version = "2.1.9"
[dependencies]
tokyo = { version = "1.19", features = ["full"] }

• Use a different compiler: In some cases, you may need to use a different compiler to build packages like solana-program. For example, if you use cargo build with the --release option, you can try building against Rust 1.78.0 instead.

Conclusion

A critical issue has occurred while building a docker program on Solana, and it is essential to resolve this issue quickly. By upgrading your Rust compiler or using Cargo’s version control, you should be able to resolve the error and continue developing your projects successfully. Remember to always keep your tools up to date to ensure compatibility with the latest versions of Solana and its package manager.

Additional Resources

For more information on troubleshooting similar issues, I recommend checking out the following resources:

• [Solana Rust Installation Guide](

• [Rust Compiler Documentation](

• [Cargo Versioning Guide](

By taking the necessary steps to resolve this error, you will be able to build and maintain a reliable system on Solana. Happy coding!