How to write the `channel` for `rust-toolchain.toml`?

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  • GitHub repo Rustup

    The Rust toolchain installer

    PR #2653 which introduced the rust-toolchain.toml file is very recent and will only land in rustup version 1.24 from what I can tell. You can check what version you have using rustup --version but from what I can tell the latest publicly available stable version is 1.23. This seems to be a case where the docs have been updated faster than the change actually landed.

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