fmt: I ran cargo fmt

src/main.rs

@@ -30,10 +30,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 }
 
 fn auth_header(mut req: Request<()>) -> Result<Request<()>, Status> {
+    let token: MetadataValue<_> = "Bearer my-secret-token"
+        .parse()
+        .expect("failed to parse token");
 
-    let token: MetadataValue<_> = "Bearer my-secret-token".parse().expect("failed to parse token");
+    req.metadata_mut()
-
+        .insert("x-goog-api-key", token)
-
+        .expect("WHAT");
-	req.metadata_mut().insert("x-goog-api-key", token).expect("WHAT");
+    Ok(req)
-	Ok(req)
 }