Rubocop 使用错误版本的 Ruby - 失败答案

【问题标题】：Rubocop using wrong version of Ruby - FailsRubocop 使用错误版本的 Ruby - 失败
【发布时间】：2019-02-05 10:31:11
【问题描述】：

我已经使用 rvm implode 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，但似乎与 RVM 的 Ruby 2.5.1 一起提供）

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>'

【问题讨论】：

标签： ruby rubocop

【解决方案1】：

在 version 0.52.0 中向 Rubocop 添加了对 Ruby 2.5 的支持。但是你使用的是0.49.1。

您需要将 Rubocop 更新到至少版本 0.52.0，或者甚至更好地更新到最新版本（截至今天为 0.63.1）。

根据您的设置，您只需运行bundle update rubocop，或者您可能需要先在Gemfile 中指定所需的版本。

【讨论】：