> note: see more `Cargo.toml` keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
       >
       > ```rust
       > let mut var: {unknown}
       > ```
       >
       > ---
       >
       > Implements notable traits: Read, Write
       For full logs, run 'nix log /nix/store/b6j83fchhmr2n2342c7c94qrfsbis1xl-test-neovim-rust-analyzer.drv'.