Mismatch type: Listing 17-5

The listing 17-5 do not compile. Here is the compilation error message:

--> src\main.rs:19:13
|
19 | let (url, maybe_title) =
| ^^^^^^^^^^^^^^^^^^ expected Option<String>, found (_, _)
20 | / match trpl::race(title_fut_1, title_fut_2).await {
21 | | Either::Left(left) => left,
22 | | Either::Right(right) => right,
23 | | };
| |_____________- this expression has type Option<String>
|
= note: expected enum Option<String>
found tuple (_, _)

For more information about this error, try rustc --explain E0308.
error: could not compile ch17-1 (bin "ch17-1") due to 1 previous error

Find listing 17-5 and compare it with src/main.rs around line 19; start by reproducing the reported compilation error for bin ch17-1. Update the listing to match the reported Option result from trpl::race, then verify that ch17-1 compiles.