refactor: fix minor issues

Author: Sherlock-Holo

compio-driver/src/lib.rs

@@ -292,7 +292,7 @@ impl Proactor {
     /// This function will panic if the requested operation has not been
     /// completed.
     pub fn pop<T>(&mut self, op: Key<T>) -> PushEntry<Key<T>, (BufResult<usize, T>, u32)> {
-        instrument!(compio_log::Level::DEBUG, "pop_flags", ?op);
+        instrument!(compio_log::Level::DEBUG, "pop", ?op);
         if op.has_result() {
             let flags = op.flags();
             // SAFETY: completed.

compio-driver/tests/file.rs

@@ -53,11 +53,7 @@ fn push_and_wait<O: OpCode + 'static>(driver: &mut Proactor, op: O) -> BufResult
                 driver.poll(None, &mut entries).unwrap();
             }
             assert_eq!(entries[0], user_data.user_data());
-            driver
-                .pop(user_data)
-                .map_ready(|(res, _)| res)
-                .take_ready()
-                .unwrap()
+            driver.pop(user_data).take_ready().unwrap().0
         }
     }
 }