print error number on failure

test-project/main.cpp

@@ -24,7 +24,7 @@ int execute_copy_crc(){
         std::cout << "Finished successfully. Calculated CRC is: 0x" << std::hex << result.crc_value << std::dec << std::endl;
     }
     else {
-        std::cout << "Failure occurred." << std::endl;
+        std::cout << "Failure #" << static_cast<uint32_t>(result.status) << " occurred." << std::endl;
         return -1;
     }