Release the mutex early, no need for spawning threads

src/server.rs

@@ -47,11 +47,12 @@ fn main() {
 
     for _ in rx {
 
+        let uri = {
             let mut tasks = tasks.lock().unwrap();
+            tasks.pop()
+        };
 
-        while let Some(uri) = tasks.pop() {
+        if let Some(uri) = uri {
-
-            thread::spawn(move || {
 
             let builder = GeneralBuilder::new();
             let uri = percent_decode(uri.path().as_bytes()).decode_utf8().unwrap();
@@ -71,8 +72,6 @@ fn main() {
             };
             println!();
 
-            });
-
         }
     }
 }