WARNING: Unexpected middleware set after the adapter. This won't be supported from Faraday 1.0.

[ttanimichi]

I have got a warning.

$ ruby /home/ttanimichi/.RubyMine2017.2/config/scratches/scratch.rb
WARNING: Unexpected middleware set after the adapter. This won't be supported from Faraday 1.0.
/home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:906:in `rescue in block in connect': Failed to open TCP connection to webservices.amazon.:80 (getaddrinfo: Name or service not known) (Faraday::ConnectionFailed)
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:903:in `block in connect'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/timeout.rb:93:in `block in timeout'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/timeout.rb:103:in `timeout'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:902:in `connect'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:887:in `do_start'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:876:in `start'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:1407:in `request'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/2.4.0/net/http.rb:1165:in `get'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/adapter/net_http.rb:78:in `perform_request'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/adapter/net_http.rb:38:in `block in call'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/adapter/net_http.rb:85:in `with_net_http_connection'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/adapter/net_http.rb:33:in `call'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/rack_builder.rb:141:in `build_response'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/connection.rb:387:in `run_request'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/faraday-0.13.1/lib/faraday/connection.rb:137:in `get'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/rapa-0.5.5/lib/rapa/client.rb:137:in `send_request'
	from /home/ttanimichi/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/rapa-0.5.5/lib/rapa/client.rb:41:in `list_items'
	from /home/ttanimichi/.RubyMine2017.2/config/scratches/scratch.rb:7:in `<main>'

$ cat /home/ttanimichi/.RubyMine2017.2/config/scratches/scratch.rb
require "rapa"

Rapa::Client.new(
    access_key_id: "",
    associate_tag: "",
    secret_access_key: "",
).list_items(
    item_ids: [""],
    domain: "",
    response_groups: [""],
)

$ gem list rapa

*** LOCAL GEMS ***

rapa (0.5.5)

$ ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS"