Redmine

For the record:

:scope => preload(:project) was introduced by r13482 (#14534).

=== (+11,-5) app/models/time_entry.rb ===
@@ -35,7 +35,7 @@

   acts_as_activity_provider :timestamp => "#{table_name}.created_on",
                             :author_key => :user_id,
-                            :find_options => {:include => :project}
+                            :scope => preload(:project)

So target 3.0.0 is no need.
But 3.0.0 was already released.