Is there a way I can download the API library docs for Rust or generate them? The only docs I can find in the Rust source are in src/docs.
I'm running the nightly build, so I'm sure there's a way to generate all the docs in the same fashion as the standard docs using rustdoc, I just can't find it!
I'm running Linux, with the nightly build, using this command:
curl -s https://static.rust-lang.org/rustup.sh | sudo sh
Rustup
If you use rustup, the recommended way to install and update Rust, then the docs may already be installed; the default installation behavior has changed over time. Try running rustup doc to open them in your browser.
If they aren't already installed, you can download the docs by running rustup component add rust-docs.
By default, rustup doc opens the documentation front page, but you can add --std to jump straight to the standard API docs or --book for The Rust Programming Language. You can also use rustup doc std::iter::Iterator to open the documentation of a specific item.
rustup 1.20 learned the concept of profiles. These allow you to default to having docs installed for a toolchain (via the default profile) or not (via the minimal profile).
Standalone Rust Installer
The Rust installer also installs the documentation for the language and for Cargo. On Linux systems, it can be found at /usr/local/share/doc/{rust,cargo}.