{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
        // The only variable rust-analyzer ever sets is `OUT_DIR`, so only diagnose that to avoid
    let s = get_env_inner(db, arg_id, &key).unwrap_or_else(|| {
        // unnecessary diagnostics for eg. `CARGO_PKG_NAME`.