Vernier.trace_retained: fails on missing keywords

[yosiat]

Hi!

First of all, thanks for developing this amazing tool 🚀 I am trying to use it, I managed to get Vernier.trace example to work, but the trace_retained isn't working for me:

 ❯ ruby -r vernier -e 'Vernier.trace_retained(out: "irb_profile.json") { require "irb" }'
/Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:160:in `initialize': missing keywords: :name, :timestamps, :sample_categories, :started_at (ArgumentError)
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:104:in `new'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:104:in `block in data'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:102:in `each'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:102:in `map'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:102:in `data'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/output/firefox.rb:92:in `output'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/result.rb:24:in `to_gecko'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier/result.rb:28:in `write'
        from /Users/yosi/.rvm/gems/ruby-3.2.2/gems/vernier-0.3.0/lib/vernier.rb:44:in `trace_retained'
        from -e:1:in `<main>'

~
 ❯ ruby -v
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22]

[jhawthorn]

Sorry! I broke this half-intentionally in the latest version. I've been focusing a bit more on time profiles rather than memory profiles, but I hope to fix this back up soon.

[jhawthorn]

This is fixed in the latest release (there's some issues with how it's displayed in "stack chart" mode but everything else should work 😅)