Move all compile-fail tests to ui tests

The update-references.sh script makes these much easier to update in
bulk compared to compile-fail tests.

test_suite/tests/ui/default-attribute/nameless_struct_fields.stderr

@@ -0,0 +1,8 @@
+error: #[serde(default)] can only be used on structs with named fields
+  --> $DIR/nameless_struct_fields.rs:12:10
+   |
+12 | #[derive(Deserialize)]
+   |          ^^^^^^^^^^^
+
+error: aborting due to previous error
+