debug: curl Twirp probe between save and lookup, show env vars

.gitea/actions/rust-cache/action.yml

@@ -55,8 +55,38 @@ runs:
         key: rust-linux-${{ steps.cache-key.outputs.hash }}
         save-always: true
 
+    - name: Twirp probe via curl (debug)
+      shell: bash
+      env:
+        ACTIONS_CACHE_URL: ${{ env.ACTIONS_CACHE_URL }}
+        ACTIONS_RUNTIME_TOKEN: ${{ env.ACTIONS_RUNTIME_TOKEN }}
+        ACTIONS_RESULTS_URL: ${{ env.ACTIONS_RESULTS_URL }}
+      run: |
+        echo "=== Cache env vars ==="
+        echo "ACTIONS_CACHE_URL=$ACTIONS_CACHE_URL"
+        echo "ACTIONS_RUNTIME_TOKEN len=${#ACTIONS_RUNTIME_TOKEN}"
+        echo "ACTIONS_RESULTS_URL=$ACTIONS_RESULTS_URL"
+        if [ -n "$ACTIONS_CACHE_URL" ]; then
+          echo "=== Twirp probe (v1): GetCacheEntryDownloadURL ==="
+          BODY=$(printf '{"key":"rust-linux-%s","restoreKeys":[],"version":"%s"}' "$HASH" "$HASH")
+          RESP=$(curl -s -X POST \
+            -H "Content-Type: application/json" \
+            -H "Authorization: Bearer $ACTIONS_RUNTIME_TOKEN" \
+            "$ACTIONS_CACHE_URL/twirp/github.actions.results.api.v1.CacheService/GetCacheEntryDownloadURL" \
+            -d "$BODY" \
+            -w "\nHTTP_STATUS:%{http_code}" 2>&1)
+          echo "$RESP"
+        else
+          echo "ACTIONS_CACHE_URL is empty"
+        fi
+
     - name: Lookup same key immediately after save
       id: cache-lookup
+      env:
+        ACTIONS_CACHE_URL: ${{ env.ACTIONS_CACHE_URL }}
+        ACTIONS_RUNTIME_TOKEN: ${{ env.ACTIONS_RUNTIME_TOKEN }}
+        ACTIONS_CACHE_SERVICE_V2: "0"
+        ACTIONS_RESULTS_URL: ${{ env.ACTIONS_RESULTS_URL }}
       uses: https://gitea.com/actions/cache@v3
       with:
         path: ~/.cargo/registry
@@ -70,3 +100,4 @@ runs:
         echo "=== ~/.rustup ===" && du -sh ~/.rustup 2>/dev/null || echo "(empty)"
         echo "save result: ${{ steps.cache-save.outputs.cache-hit }}"
         echo "lookup result: ${{ steps.cache-lookup.outputs.cache-hit }}"
+        echo "ACTIONS_CACHE_URL=$ACTIONS_CACHE_URL"