time travel query

cozo-core/benches/time_travel.rs

@@ -235,14 +235,15 @@ fn time_travel_init(_: &mut Bencher) {
     (0..count).for_each(|_| {
         plain_aggr();
     });
-    dbg!(plain_aggr_time.elapsed().as_secs_f64() / (count as f64));
+    dbg!(plain_aggr_time.elapsed().as_secs_f64());
 
     for k in [1, 10, 100, 1000] {
         let tt_stupid_aggr_time = Instant::now();
         (0..count).for_each(|_| {
             tt_stupid_aggr(k);
         });
-        dbg!(tt_stupid_aggr_time.elapsed().as_secs_f64() / (count as f64));
+        dbg!(k);
+        dbg!(tt_stupid_aggr_time.elapsed().as_secs_f64());
     }
 
     for k in [1, 10, 100, 1000] {
@@ -250,6 +251,7 @@ fn time_travel_init(_: &mut Bencher) {
         (0..count).for_each(|_| {
             tt_travel_aggr(k);
         });
-        dbg!(tt_travel_aggr_time.elapsed().as_secs_f64() / (count as f64));
+        dbg!(k);
+        dbg!(tt_travel_aggr_time.elapsed().as_secs_f64());
     }
 }

cozo-core/src/runtime/relation.rs

@@ -201,7 +201,8 @@ impl Debug for RelationHandle {
 #[derive(thiserror::Error, miette::Diagnostic, Debug)]
 #[error("Cannot deserialize relation")]
 #[diagnostic(code(deser::relation))]
-#[diagnostic(help("This could indicate a bug. Consider file a bug report."))]
+#[diagnostic(help("This could indicate a bug, or you are using an incompatible DB version. \
+Consider file a bug report."))]
 pub(crate) struct RelationDeserError;
 
 impl RelationHandle {