DEBUG: Check rustc version in tests

Author: smheidrich

.github/workflows/test.yml

@@ -42,6 +42,9 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
+      - name: 'Debug: check rustc'
+        run: |
+          rustc -V
       - name: Restore Rust/Cargo cache
         uses: actions/cache/restore@v4
         with:
@@ -52,6 +55,9 @@ jobs:
             ~/.cargo/git/db/
             target/
           key: ${{ runner.os }}-rust-v4-${{ hashFiles('**/Cargo.lock') }}
+      - name: 'Debug: check rustc'
+        run: |
+          rustc -V
       - name: Restore Python/pip cache
         uses: actions/cache/restore@v4
         with: