> GET /info/rails-observers
> accept-encoding: gzip
> accept: */*
> user-agent: bundler/2.1.0.pre.2 rubygems/3.1.0.pre2 ruby/2.6.5 (x86_64-pc-linux-gnu) command/lock options/spec_run 3e43c0891d1533e1
> connection: keep-alive
> keep-alive: 30
> host: index.rubygems.org