Add #[deriving(Copy)] as appropriate

src/transaction.rs

@@ -7,6 +7,7 @@ pub use SqliteTransactionBehavior::{
 
 /// Options for transaction behavior. See [BEGIN
 /// TRANSACTION](http://www.sqlite.org/lang_transaction.html) for details.
+#[deriving(Copy)]
 pub enum SqliteTransactionBehavior {
     SqliteTransactionDeferred,
     SqliteTransactionImmediate,

src/types.rs

@@ -141,6 +141,7 @@ impl<T: ToSql> ToSql for Option<T> {
 ///     conn.execute("INSERT INTO people (name) VALUES (?)", &[&Null])
 /// }
 /// ```
+#[deriving(Copy)]
 pub struct Null;
 
 impl ToSql for Null {