Fix CI error and bump MSRV to 1.80

.github/workflows/test.yaml

@@ -54,7 +54,7 @@ jobs:
       - name: Install Rust toolchain
         # Use specific Rust version that is the minimum supported `rust-version`
         # (MSRV) from `Cargo.toml`.
-        uses: dtolnay/rust-toolchain@1.77
+        uses: dtolnay/rust-toolchain@1.80
 
       - name: Install cross-compilation tools
         uses: taiki-e/setup-cross-toolchain-action@v1

CHANGELOG.md

@@ -13,6 +13,7 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Changed
 
+- Breaking: Bump Minimum Supported Rust Version (MSRV) to 1.80.
 - Breaking: Change type `Certificate` to hold certificate without private key.
 - Breaking: Use new types `Certificate` and `PrivateKey` instead of raw `&[u8]` in
   `ua::ClientBuilder::default_encryption()`, `ua::ServerBuilder::default_with_security_policies()`.

Cargo.toml

@@ -3,9 +3,9 @@ name = "open62541"
 version = "0.6.6"
 authors = ["HMI Project"]
 edition = "2021"
-# Keep the MSRV number here in sync with `test.yaml`. We require Rust 1.77 since
-# we want to use C-string literals.
-rust-version = "1.77"
+# Keep the MSRV number here in sync with `test.yaml`. We require Rust 1.80 since
+# we want to conveniently exclude examples from published crate.
+rust-version = "1.80"
 description = "High-level, safe bindings for the C99 library open62541, an open source and free implementation of OPC UA (OPC Unified Architecture)."
 documentation = "https://docs.rs/open62541"
 readme = "README.md"