Just run:
curl -L https://git.io/rustlings | bash
# Or if you want it to be installed to a different path:
curl -L https://git.io/rustlings | bash -s mypath/This will install Rustlings and give you access to the rustlings command. Run it to get started!
Basically: Clone the repository, checkout to the latest tag, run cargo install.
git clone https://github.com/rust-lang/rustlings
cd rustlings
git checkout tags/1.0.0 # or whatever the latest version is (find out at https://github.com/rust-lang/rustlings/releases/latest)
cargo install --force --path .rustlings was originally written by Carol!