我正在尝试通过vagrant-bindfs安装vagrant up，但它失败了，vagrant plugin install vagrant-bindfs也发生了同样的情况。
所以我已经下载了gem文件并试图手动安装它，如下所示：
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~/.vagrant.d/gems/gems » gem install -l ~/Downloads/vagrant-bindfs-0.4.12.gem --install-dir . --debug
NOTE: Debugging mode prints all exceptions even when rescued
Exception `LoadError' at /usr/local/Cellar/ruby/2.3.2/lib/ruby/2.3.0/resolv.rb:171 - LoadError
Exception `Errno::EEXIST' at /usr/local/Cellar/ruby/2.3.2/lib/ruby/2.3.0/fileutils.rb:253 - File exists @ dir_s_mkdir - /Users/ml/.vagrant.d/gems/gems
Exception `Gem::InstallError' at /usr/local/lib/ruby/site_ruby/2.3.0/rubygems/installer.rb:611 - vagrant-bindfs requires Ruby version ~> 2.0.0.
ERROR: Error installing /Users/ml/Downloads/vagrant-bindfs-0.4.12.gem:
vagrant-bindfs requires Ruby version ~> 2.0.0.
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~/.vagrant.d/gems/gems » gem env
RubyGems Environment:
- RUBYGEMS VERSION: 2.6.8
- RUBY VERSION: 2.3.2 (2016-11-15 patchlevel 217) [x86_64-darwin15]
- INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/2.3.0
- USER INSTALLATION DIRECTORY: /Users/ml/.gem/ruby/2.3.0
- RUBY EXECUTABLE: /usr/local/opt/ruby/bin/ruby
- EXECUTABLE DIRECTORY: /usr/local/bin
- SPEC CACHE DIRECTORY: /Users/ml/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: /usr/local/Cellar/ruby/2.3.2/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-15
- GEM PATHS:
- /usr/local/lib/ruby/gems/2.3.0
- /Users/ml/.gem/ruby/2.3.0
- /usr/local/Cellar/ruby/2.3.2/lib/ruby/gems/2.3.0
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- .
- /usr/local/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /Users/ml/.composer/vendor/bin
因此，如上所述它需要~> 2.0.0，并且版本gem使用的是RUBY VERSION: 2.3.2，这应该没问题。
知道这里发生了什么吗？