不可复制对象向量上的std :: for_each

I was reading about std::for_each in cppreference:

与其余并行算法不同，不允许for_each   即使序列中的元素琐碎，也要对其进行复制   可复制的。

So, to me, it means that std::for_each does not copy-construct objects in the container and it should work fine with a container of non-copyable objects. But while trying to compile this code with VS2015:

   std::vector<std::thread> threads;

   std::for_each(
      threads.begin(), 
      threads.end(), 
      [threads](std::thread & t) {t.join(); });

编译器抱怨要删除的cctor：

Error   C2280   'std::thread::thread(const std::thread &)': attempting to reference a deleted function ... 

我对上述报价的理解有什么问题？