Rust error[E0554]

This Rust error (E0554) is simple and it occurs when we try to install/build projects with a stable version of Rust. The first step is to run the following command:

 rustup install nightly

After that, you can run your cargo command. For example:

cargo +nightly build

If your encounter the error when you install a package, you can try the following:

cargo +nightly install <your pack>