安装vagrant插件时出现问题

我有一个问题时，试图安装任何流浪插件

vagrant plugin install vagrant-aws
vagrant plugin install vagrant-awsinfo

我最终得到的错误是：

Installing the 'vagrant-aws' plugin. This can take a few minutes...
Bundler, the underlying system Vagrant uses to install plugins,
reported an error. The error is shown below. These errors are usually
caused by misconfigured plugin installations or transient network
issues. The error from Bundler is:

Authentication is required for http://gems.hashicorp.com/.
Please supply credentials for this source. You can do this by running:
bundle config http://gems.hashicorp.com/ username:password

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我在代理服务器后面。不确定此问题是否与此有关。

没有代理也有相同的问题。看起来hashicorp希望关闭对的免费访问