Companion for Substrate #6269 (nested storage tx)

parachain/src/wasm_executor/mod.rs

@@ -276,6 +276,18 @@ impl sp_externalities::Externalities for ValidationExternalities {
 		panic!("storage_append: unsupported feature for parachain validation")
 	}
 
+	fn storage_start_transaction(&mut self) {
+		panic!("storage_start_transaction: unsupported feature for parachain validation")
+	}
+
+	fn storage_rollback_transaction(&mut self) {
+		panic!("storage_rollback_transaction: unsupported feature for parachain validation")
+	}
+
+	fn storage_commit_transaction(&mut self) {
+		panic!("storage_commit_transaction: unsupported feature for parachain validation")
+	}
+
 	fn wipe(&mut self) {
 		panic!("wipe: unsupported feature for parachain validation")
 	}