Vendor dependencies for 0.3.0 release

vendor/pin-project/tests/ui/pin_project/add-attr-to-struct.rs

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+use std::marker::PhantomPinned;
+
+use auxiliary_macro::add_pin_attr;
+use pin_project::pin_project;
+
+#[pin_project]
+#[add_pin_attr(struct)] //~ ERROR expected attribute arguments in parentheses
+struct Foo {
+    #[pin]
+    f: PhantomPinned,
+}
+
+#[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
+#[pin_project]
+struct Bar {
+    #[pin]
+    f: PhantomPinned,
+}
+
+fn main() {}