chore: upgrade lance to 6.0.0-beta.1 (#3281)

rust/lancedb/src/table/dataset.rs

@@ -285,7 +285,10 @@ mod tests {
 
     use super::*;
 
-    use crate::{connect, io::object_store::io_tracking::IoStatsHolder, table::WriteOptions};
+    use crate::{
+        connect, io::object_store::io_tracking::IoStatsHolder, table::WriteOptions,
+        utils::background_cache::clock,
+    };
 
     async fn create_test_dataset(uri: &str) -> Dataset {
         let schema = Arc::new(Schema::new(vec![Field::new("id", DataType::Int32, false)]));
@@ -463,6 +466,10 @@ mod tests {
         let uri = dir.path().to_str().unwrap();
         let ds = create_test_dataset(uri).await;
 
+        // Other tests use a thread-local mock clock. Simulate leaked state from a
+        // previous test to ensure this wrapper starts from real time.
+        clock::advance_by(Duration::from_secs(60));
+
         let wrapper = DatasetConsistencyWrapper::new_latest(ds, Some(Duration::from_millis(200)));
 
         // Populate the cache

rust/lancedb/src/utils/background_cache.rs

@@ -107,6 +107,14 @@ where
             refresh_window < ttl,
             "refresh_window ({refresh_window:?}) must be less than ttl ({ttl:?})"
         );
+        #[cfg(test)]
+        {
+            // Tests may advance the thread-local mock clock and leave it behind for
+            // the next test that happens to run on the same worker thread. Each new
+            // cache should start from a clean clock state instead of inheriting
+            // unrelated mock time from a previous test.
+            clock::clear_mock();
+        }
         Self {
             inner: Arc::new(Mutex::new(CacheInner {
                 state: State::Empty,