EXCEPTION (CommandException): Command failed with error #1! COMMAND "C:\Ruby24-x64\bin\rubocop.bat" --version STDOUT (empty) STDERR C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/unicode-display_width-1.3.0/lib/unicode/display_width/index.rb:5:in `<module:DisplayWidth>': undefined method `gunzip' for Gem:Module (NoMethodError) from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/unicode-display_width-1.3.0/lib/unicode/display_width/index.rb:4:in `<module:Unicode>' from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/unicode-display_width-1.3.0/lib/unicode/display_width/index.rb:3:in `<top (required)>' from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/unicode-display_width-1.3.0/lib/unicode/display_width.rb:2:in `require_relative' from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/unicode-display_width-1.3.0/lib/unicode/display_width.rb:2:in `<top (required)>' from C:/Ruby24-x64/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:85:in `require' from C:/Ruby24-x64/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:85:in `require' from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/rubocop-0.51.0/lib/rubocop.rb:14:in `<top (requir... (394 more byte(s)) ... #0 C:\dev\phorge\arcanist\src\future\exec\ExecFuture.php(340): ExecFuture->raiseResultError(Array) #1 C:\dev\phorge\arcanist\src\future\exec\execx.php(17): ExecFuture->resolvex() #2 C:\dev\phorge\arcanist\src\lint\linter\ArcanistRuboCopLinter.php(34): execx('%C --version', Object(PhutilCommandString)) #3 C:\dev\phorge\arcanist\src\lint\linter\__tests__\ArcanistExternalLinterTestCase.php(7): ArcanistRuboCopLinter->getVersion() #4 C:\dev\phorge\arcanist\src\unit\engine\phutil\PhutilTestCase.php(634): ArcanistExternalLinterTestCase->testVersion() #5 C:\dev\phorge\arcanist\src\unit\engine\PhutilUnitTestEngine.php(69): PhutilTestCase->run() #6 C:\dev\phorge\arcanist\src\unit\engine\ArcanistConfigurationDrivenUnitTestEngine.php(148): PhutilUnitTestEngine->run() #7 C:\dev\phorge\arcanist\src\workflow\ArcanistUnitWorkflow.php(170): ArcanistConfigurationDrivenUnitTestEngine->run() #8 C:\dev\phorge\arcanist\src\workflow\ArcanistDiffWorkflow.php(1231): ArcanistUnitWorkflow->run() #9 C:\dev\phorge\arcanist\src\workflow\ArcanistDiffWorkflow.php(1133): ArcanistDiffWorkflow->runUnit() #10 C:\dev\phorge\arcanist\src\workflow\ArcanistDiffWorkflow.php(363): ArcanistDiffWorkflow->runLintUnit() #11 C:\dev\phorge\arcanist\scripts\arcanist.php(427): ArcanistDiffWorkflow->run() #12 {main}