我已经使用 rvm 内爆重新安装了 RVM、Ruby 和所有 gem。当我运行rubocop时，我收到一个错误，指出它正在使用2.5(我没有明确安装，但似乎随RVM的Ruby 2.5.1一起提供(
请注意我用 * * 突出显示的行 - 这可能是问题所在？
$ which ruby
/Users/Will/.rvm/rubies/ruby-2.5.1/bin/ruby
$ rvm use 2.5.1
Using /Users/Will/.rvm/gems/ruby-2.5.1
$ rubocop
Inspecting 604 files
0 files inspected, no offenses detected
Unknown Ruby version: 2.5
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/processed_source.rb:131:in `parser_class’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/processed_source.rb:138:in `create_parser’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/processed_source.rb:94:in `parse’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/processed_source.rb:36:in `initialize’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/processed_source.rb:17:in `new’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/processed_source.rb:17:in `from_file’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:334:in `get_processed_source’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:110:in `block in file_offenses’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:121:in `file_offense_cache’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:109:in `file_offenses’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:100:in `process_file’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:78:in `block in each_inspected_file’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:75:in `each’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:75:in `reduce’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:75:in `each_inspected_file’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:67:in `inspect_files’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/runner.rb:39:in `run’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/cli.rb:82:in `execute_runner’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/lib/rubocop/cli.rb:28:in `run’
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/bin/rubocop:13:in `block in <top (required)>'
*/Users/Will/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/benchmark.rb:308:in `realtime’*
/Users/Will/.rvm/gems/ruby-2.5.1/gems/rubocop-0.49.1/bin/rubocop:12:in `<top (required)>'
/Users/Will/.rvm/gems/ruby-2.5.1/bin/rubocop:23:in `load’
/Users/Will/.rvm/gems/ruby-2.5.1/bin/rubocop:23:in `<main>'
/Users/Will/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:in `eval’
/Users/Will/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:in `<main>'
在版本 0.52.0 中增加了对 Ruby 2.5 的支持。但是您正在使用0.49.1.
您需要将Rubocop至少更新到0.52.0版本，甚至更好地更新到最新版本(截至今天0.63.1(。
根据您的设置，您只需运行bundle update rubocop或者可能需要先在Gemfile中指定所需的版本。
当我的 VScode 正在寻找安装在 ruby 2.6 中的 rubo cop gem 时，它应该在 2.7 中查找时找到了这个线程。
不确定这是修复程序还是其他一些事情，但我尝试的最后一件事是将 ruby 版本全局设置为 2.7
我使用 rbenv，所以能够执行rbenv global 2.7.4并退出/重新启动 vscode，错误消失了。