{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"cmd.env(\"RUSTDOC\","}]}
        cmd.env("RUSTDOC", &compiler.rustdoc);
        cmd.env("RUSTC", &compiler.rustc);
        rustflags_to_cmd_env(&mut cmd, "RUSTFLAGS", &compiler.rustflags);