GH Actions Rust version: 1.87

Author: peter-lyons-kehl

.github/workflows/main.yml

@@ -7,7 +7,8 @@ on:
 jobs:
   validate-version:
     runs-on: ubuntu-latest
-    container: rust:1.86-alpine
+    # Cargo.toml has "rust-version" (MSRV) 1.86. However, tests need 1.87.
+    container: rust:1.87-alpine
     steps:
       - name: Checkout code
         uses: actions/checkout@v4