worker: remove some unwraps

src/main.rs

@@ -40,7 +40,7 @@ async fn main() {
         let next_task = if workers_active < config.max_workers {
             world.dequeue()
         } else {
-            Err(Duration::from_secs(3600))
+            Err(Duration::from_secs(5))
         };
         match next_task {
             Err(duration) => {

src/worker.rs

@@ -34,7 +34,7 @@ pub fn fetch_and_process(
                 timestamps.sort();
                 let next_interval = if timestamps.len() > 1 {
                     ((*timestamps.last().unwrap() - timestamps[0]) / (timestamps.len() as i32)
-                    ).to_std().unwrap()
+                    ).to_std().unwrap_or(DEFAULT_INTERVAL)
                      .min(DEFAULT_INTERVAL)
                      .max(MIN_INTERVAL)
                 } else {
@@ -54,8 +54,8 @@ pub fn fetch_and_process(
                     }
                 }
                 let hosts = hosts.into_iter().collect();
-                tx.send(Message::IntroduceHosts { hosts }).unwrap();
-                tx.send(Message::Posts { posts }).unwrap();
+                let _ = tx.send(Message::IntroduceHosts { hosts });
+                let _ = tx.send(Message::Posts { posts });
 
                 tx.send(Message::Fetched {
                     host: host.clone(),