Vendor dependencies for 0.3.0 release

vendor/pin-project/tests/ui/pin_project/add-pinned-field.rs

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use auxiliary_macro::add_pinned_field;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[add_pinned_field]
+struct Foo {
+    #[pin]
+    f: u32,
+}
+
+#[add_pinned_field]
+#[pin_project]
+struct Bar {
+    #[pin]
+    f: u32,
+}
+
+fn main() {
+    is_unpin::<Foo>(); //~ ERROR E0277
+    is_unpin::<Bar>(); //~ ERROR E0277
+}