fix(rust-analyzer): nits that are showing up as errors (#2735)

## Linked Issues/PRs
<!-- List of related issues/PRs -->
- none

## Description
<!-- List of detailed changes -->
`rust-analyzer` failing on my machine because of these errors

## Checklist
- [ ] Breaking changes are clearly marked as such in the PR description
and changelog
- [ ] New behavior is reflected in tests
- [ ] [The specification](https://github.com/FuelLabs/fuel-specs/)
matches the implemented behavior (link update PR if changes are needed)

### Before requesting review
- [ ] I have reviewed the code myself
- [ ] I have created follow-up issues caused by this PR and linked them
here

### After merging, notify other teams

[Add or remove entries as needed]

- [ ] [Rust SDK](https://github.com/FuelLabs/fuels-rs/)
- [ ] [Sway compiler](https://github.com/FuelLabs/sway/)
- [ ] [Platform
documentation](https://github.com/FuelLabs/devrel-requests/issues/new?assignees=&labels=new+request&projects=&template=NEW-REQUEST.yml&title=%5BRequest%5D%3A+)
(for out-of-organization contributors, the person merging the PR will do
this)
- [ ] Someone else?

crates/fuel-core/src/graphql_api/worker_service/tests.rs

@@ -46,7 +46,7 @@ async fn run__relayed_transaction_events_are_added_to_storage() {
     // when
     let mut task =
         worker_task_with_block_importer_and_db(block_importer, database.clone());
-    task.run(&mut state_watcher).await;
+    let _ = task.run(&mut state_watcher).await;
     tokio::time::sleep(tokio::time::Duration::from_millis(100)).await;
 
     // then

crates/fuel-core/src/service/adapters/consensus_parameters_provider.rs

@@ -350,7 +350,7 @@ mod tests {
         // When
         let result_with_new_version = result_with_new_version(new_version);
         let _ = block_sender.send(result_with_new_version);
-        task.run(&mut StateWatcher::started()).await;
+        let _ = task.run(&mut StateWatcher::started()).await;
 
         // Then
         assert_eq!(

crates/services/gas_price_service/src/v0/service.rs

@@ -276,7 +276,7 @@ mod tests {
         let initial_price = read_algo.next_gas_price();
 
         // when
-        service.run(&mut watcher).await;
+        let _ = service.run(&mut watcher).await;
         l2_block_sender.send(l2_block).await.unwrap();
         service.shutdown().await.unwrap();
 

crates/services/p2p/src/service.rs

@@ -1845,7 +1845,7 @@ pub mod tests {
         watcher: &mut StateWatcher,
     ) -> (FuelPeerId, AppScore, String) {
         loop {
-            task.run(watcher).await;
+            let _ = task.run(watcher).await;
             if let Ok((peer_id, recv_report, service)) = report_receiver.try_recv() {
                 return (peer_id, recv_report, service);
             }
@@ -1897,7 +1897,7 @@ pub mod tests {
 
         for _ in 0..100 {
             // When
-            task.run(&mut watcher).await;
+            let _ = task.run(&mut watcher).await;
 
             // Then
             block_processed_receiver