Cannot start rails with missing symbol `_rb_get_kwargs`

[KyleGoddard]

Attempting to start a (very) legacy rails project after having updated the http_parser.rb gem to version 0.8.0.

/Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require': dlopen(/Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/http_parser.rb-0.8.0/lib/ruby_http_parser.bundle, 0x0009): symbol not found in flat namespace '_rb_get_kwargs' - /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/http_parser.rb-0.8.0/lib/ruby_http_parser.bundle (LoadError)
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `block in require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/http_parser.rb-0.8.0/lib/http_parser.rb:2:in `<top (required)>'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `block in require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/http_parser.rb-0.8.0/lib/http/parser.rb:1:in `<top (required)>'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `block in require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/em-http-request-1.1.7/lib/em-http.rb:4:in `<top (required)>'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `block in require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/activesupport-3.2.22.5/lib/active_support/dependencies.rb:251:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/faye-1.0.1/lib/faye.rb:4:in `<top (required)>'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler/runtime.rb:81:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler/runtime.rb:76:in `each'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler/runtime.rb:76:in `block in require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler/runtime.rb:65:in `each'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler/runtime.rb:65:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/bundler-1.17.3/lib/bundler.rb:114:in `require'
	from /Users/username/Documents/GitHub/fms/config/application.rb:12:in `<top (required)>'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/railties-3.2.22.5/lib/rails/commands.rb:53:in `require'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/railties-3.2.22.5/lib/rails/commands.rb:53:in `block in <top (required)>'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/railties-3.2.22.5/lib/rails/commands.rb:50:in `tap'
	from /Users/username/.rbenv/versions/2.1.1/lib/ruby/gems/2.1.0/gems/railties-3.2.22.5/lib/rails/commands.rb:50:in `<top (required)>'
	from script/rails:6:in `require'
	from script/rails:6:in `<main>'

Environment:

Mac OS Montery 12.1 (M1)
Ruby 2.1.1p76
Rails 3.2.22.5