Bump MSRV to 1.77

(Will be needed in order to land #26.)

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        rust_version: [stable, 1.74.0]
+        rust_version: [stable, 1.77.0]
 
     steps:
       - name: Checkout repository
@@ -53,7 +53,7 @@ jobs:
       fail-fast: false
       matrix:
         target: [aarch64-unknown-linux-gnu]
-        rust_version: [stable, 1.74.0]
+        rust_version: [stable, 1.77.0]
 
     steps:
       - name: Checkout repository
@@ -199,7 +199,7 @@ jobs:
       - name: Install nightly Rust toolchain
         # Nightly is used here because the docs.rs build
         # uses nightly and we use doc_cfg features that are
-        # not in stable Rust as of this writing (Rust 1.74).
+        # not in stable Rust as of this writing (Rust 1.77).
         uses: dtolnay/rust-toolchain@nightly
 
       - name: Run cargo docs

README.md

@@ -16,7 +16,7 @@ In particular, there is no support (yet) for multiple identity assertions in a s
 
 ## Requirements
 
-The toolkit requires **Rust version 1.74.0** or newer. When a newer version of Rust becomes required, a new minor (1.x.0) version of this crate will be released.
+The toolkit requires **Rust version 1.77.0** or newer. When a newer version of Rust becomes required, a new minor (1.x.0) version of this crate will be released.
 
 ### Supported platforms