Upgrade rust/crates/pin-project to 1.0.5

Test: make
Change-Id: Ib3aa891d12640b626e328863102306eb9f973622
diff --git a/tests/expand/unsafe_unpin/enum.rs b/tests/expand/unsafe_unpin/enum.rs
new file mode 100644
index 0000000..d368d71
--- /dev/null
+++ b/tests/expand/unsafe_unpin/enum.rs
@@ -0,0 +1,16 @@
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(UnsafeUnpin, project = EnumProj, project_ref = EnumProjRef)]
+enum Enum<T, U> {
+    Struct {
+        #[pin]
+        pinned: T,
+        unpinned: U,
+    },
+    Tuple(#[pin] T, U),
+    Unit,
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Enum<T, U> {}
+
+fn main() {}