Ruby on Windows: `ansi.rb` get_screen_size error: in `winsize': Bad file descriptor - <STDIN> (Errno::EBADF)

Question

I'm trying to use fastlane on Windows, which is installed from Bundler -- which is installed by Ruby Gem. But while running, some internal error of Ruby seems blocked the execution.

First, I went to Ruby Installer and installed Ruby+Devkit 3.0.2-1 (x64); then, I installed the Bundler and Fastlane using gem command. Error below happened when I was trying to execute them -- which I believed was not related to Bundler nor Fastlane:

C:/Ruby30-x64/lib/ruby/3.0.0/reline/ansi.rb:157:in `winsize': Bad file descriptor - <STDIN> (Errno::EBADF)
    from C:/Ruby30-x64/lib/ruby/3.0.0/reline/ansi.rb:157:in `get_screen_size'
    from C:/Ruby30-x64/lib/ruby/3.0.0/reline.rb:168:in `get_screen_size'
    from C:/Ruby30-x64/lib/ruby/3.0.0/forwardable.rb:238:in `get_screen_size'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/tty-screen-0.8.1/lib/tty/screen.rb:236:in `size_from_readline'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/tty-screen-0.8.1/lib/tty/screen.rb:66:in `size'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/tty-screen-0.8.1/lib/tty/screen.rb:76:in `width'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/fastlane-2.197.0/fastlane_core/lib/fastlane_core/print_table.rb:95:in `transform_output'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/fastlane-2.197.0/fastlane/lib/fastlane/plugins/plugin_manager.rb:335:in `print_plugin_information'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/fastlane-2.197.0/fastlane/lib/fastlane/plugins/plugin_manager.rb:316:in `load_plugins'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/fastlane-2.197.0/fastlane/lib/fastlane/commands_generator.rb:39:in `start'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/fastlane-2.197.0/fastlane/lib/fastlane/cli_tools_distributor.rb:122:in `take_off'
    from C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/fastlane-2.197.0/bin/fastlane:23:in `<top (required)>'
    from C:/Ruby30-x64/bin/fastlane:23:in `load'
    from C:/Ruby30-x64/bin/fastlane:23:in `<main>'

I'm using Windows 10 home version 20H2.

Rebooting the computer doesn't solve the problem.

I tried googling the question, but it seems that problem hasn't be reported (or be answered). I don't know where I can report the bug either.

What can I do? Any help would be appreciated!

Answer 1

I had this same error when I tried running bundle exec fastlane in git bash. I got it working by running it in powershell instead.