当我尝试“sudo gem install rubocop”时，我得到...
Building native extensions. This could take a while...
ERROR: Error installing rubocop:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.3.0/gems/rainbow-2.2.1/ext
/usr/bin/ruby2.3 mkrf_conf.rb
current directory: /var/lib/gems/2.3.0/gems/rainbow-2.2.1/ext
/usr/bin/ruby2.3 -rubygems /usr/share/rubygems-integration/all/gems/rake-10.5.0/bin/rake RUBYARCHDIR=/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/rainbow-2.2.1 RUBYLIBDIR=/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/rainbow-2.2.1
/usr/bin/ruby2.3: No such file or directory -- /usr/share/rubygems-integration/all/gems/rake-10.5.0/bin/rake (LoadError)
rake failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.3.0/gems/rainbow-2.2.1 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/rainbow-2.2.1/gem_make.out
所以我尝试了许多解决方案，特别是来自/sf/ask/1578132811/（不同的 gem，相同的错误）
我尝试使用“rvm重新安装 --disable-binary 2.2.0”重新安装 RVM，这花了一段时间但没有修复它
接下来我尝试了 $ "sudo apt-get install ruby-dev" 这产生了
Reading package …