Upgrade rust/crates/pin-project to 1.0.1

* Add missing patches, needed by external_updater

Test: make
Test: tools/external_updater/updater.sh update --refresh --keep_date rust/crates/pin-project
Change-Id: I3738561830ce97903036460713eb3b74700b889e

1 files changed, 35 insertions, 5 deletions

diff --git a/README.md b/README.md
index caee4d3..0d5f5d7 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@
 [docs-url]: https://docs.rs/pin-project
 [license-badge]: https://img.shields.io/badge/license-Apache--2.0%20OR%20MIT-blue.svg
 [license]: #license
-[rustc-badge]: https://img.shields.io/badge/rustc-1.34+-lightgray.svg
-[rustc-url]: https://blog.rust-lang.org/2019/04/11/Rust-1.34.0.html
+[rustc-badge]: https://img.shields.io/badge/rustc-1.37+-lightgray.svg
+[rustc-url]: https://blog.rust-lang.org/2019/08/15/Rust-1.37.0.html
 
 A crate for safe and ergonomic [pin-projection].
 
@@ -22,10 +22,10 @@ Add this to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-pin-project = "0.4"
+pin-project = "1"
 ```
 
-The current pin-project requires Rust 1.34 or later.
+The current pin-project requires Rust 1.37 or later.
 
 ## Examples
 
@@ -54,10 +54,40 @@ impl<T, U> Struct<T, U> {
 
 [*code like this will be generated*][struct-default-expanded]
 
+To use `#[pin_project]` on enums, you need to name the projection type
+returned from the method.
+
+```rust
+use pin_project::pin_project;
+use std::pin::Pin;
+
+#[pin_project(project = EnumProj)]
+enum Enum<T, U> {
+    Pinned(#[pin] T),
+    Unpinned(U),
+}
+
+impl<T, U> Enum<T, U> {
+    fn method(self: Pin<&mut Self>) {
+        match self.project() {
+            EnumProj::Pinned(x) => {
+                let _: Pin<&mut T> = x;
+            }
+            EnumProj::Unpinned(y) => {
+                let _: &mut U = y;
+            }
+        }
+    }
+}
+```
+
+[*code like this will be generated*][enum-default-expanded]
+
 See [documentation][docs-url] for more details, and
 see [examples] directory for more examples and generated code.
 
-[`pin_project`]: https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html
+[`pin_project`]: https://docs.rs/pin-project/1/pin_project/attr.pin_project.html
+[enum-default-expanded]: examples/enum-default-expanded.rs
 [examples]: examples/README.md
 [pin-projection]: https://doc.rust-lang.org/nightly/std/pin/index.html#projections-and-structural-pinning
 [struct-default-expanded]: examples/struct-default-expanded.rs