tokio: raise MSRV to 1.71 (#7658)

tokio-stream/src/stream_map.rs

@@ -734,22 +734,15 @@ mod rand {
         #[cfg(not(loom))]
         pub(crate) mod rand {
             use std::collections::hash_map::RandomState;
-            use std::hash::{BuildHasher, Hash, Hasher};
+            use std::hash::BuildHasher;
             use std::sync::atomic::AtomicU32;
             use std::sync::atomic::Ordering::Relaxed;
 
             static COUNTER: AtomicU32 = AtomicU32::new(1);
 
             pub(crate) fn seed() -> u64 {
-                let rand_state = RandomState::new();
-
-                let mut hasher = rand_state.build_hasher();
-
                 // Hash some unique-ish data to generate some new state
-                COUNTER.fetch_add(1, Relaxed).hash(&mut hasher);
-
-                // Get the seed
-                hasher.finish()
+                RandomState::new().hash_one(COUNTER.fetch_add(1, Relaxed))
             }
         }