Bump MSRV to 1.34.0

unrestricted_attribute_tokens requires 1.34

.github/workflows/ci.yml

@@ -27,8 +27,8 @@ jobs:
           # This is the minimum supported Rust version of this crate.
           # When updating this, the reminder to update the minimum supported
           # Rust version in README.md.
-          - build: 1.33.0
-            rust: 1.33.0
+          - build: 1.34.0
+            rust: 1.34.0
           - build: 1.36.0
             rust: 1.36.0
           - build: 1.37.0

README.md

@@ -11,8 +11,8 @@
 [docs-url]: https://docs.rs/pin-project
 [license-badge]: https://img.shields.io/crates/l/pin-project.svg
 [license]: #license
-[rustc-badge]: https://img.shields.io/badge/rustc-1.33+-lightgray.svg
-[rustc-url]: https://blog.rust-lang.org/2019/02/28/Rust-1.33.0.html
+[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
 
 A crate for safe and ergonomic pin-projection.
 
@@ -29,7 +29,7 @@ Add this to your `Cargo.toml`:
 pin-project = "0.4"
 ```
 
-The current pin-project requires Rust 1.33 or later.
+The current pin-project requires Rust 1.34 or later.
 
 ## Examples