Include original error in log messages

src/cache-utils.ts

@@ -46,9 +46,9 @@ export function handleCacheFailure(error: unknown, message: string): void {
     if (error instanceof cache.ReserveCacheError) {
         // Reserve cache errors are expected if the artifact has been previously cached
         if (isCacheDebuggingEnabled()) {
-            core.info(message)
+            core.info(`${message}: ${error}`)
         } else {
-            core.debug(message)
+            core.debug(`${message}: ${error}`)
         }
     } else {
         // Warn on all other errors