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Pin the Rust version, components and targets for a project with rust-toolchain.toml so every laptop and CI job builds the same way. Covers channel choices and the file format.
Install the Rust toolchain with rustup, check that it works, pick a channel and create your first Cargo project, with the three problems that stop most first installs.
rustup installs and switches Rust toolchains, targets and components. A guide to channels, overrides, rust-toolchain.toml, cross targets, offline use and clean upgrades.