SOS: macro_rules log not working. need a correct example

[aqrun]

From chapter 4.6 Debugging

in the lib.rs file added:

#[macro_export]
macro_rules! log {
    ( $( &t:tt )* ) => {
        web_sys::console::log_1(&format!( &( &t )* ).into());
    }
}

log!("test data {}", 1);

then run wasm-pack build it prints:

error: no rules expected the token `"test data {}"`
  --> src/lib.rs:16:6
   |
10 | macro_rules! log {
   | ---------------- when calling this macro
...
16 | log!("test data {}", 1);
   |      ^^^^^^^^^^^^^^ no rules expected this token in macro call
   |
   = note: while trying to match sequence start

error: could not compile `wasm-game-of-life` (lib) due to previous error

could anyone give a correct code. thanks!!