`Rack::Logger is deprecated and will be removed in Rack 3.2`

[dentarg]

The warning causes the tests to fail, I guess it is a good thing, so we noticed in advance.

From https://github.com/sinatra/sinatra/actions/runs/9565078027/job/26367226933#step:5:25

  1) Failure:
IntegrationTest#test_with_puma_does_not_generate_warnings_0 [test/integration_test.rb:58]:
--- expected
+++ actual
@@ -1 +1 @@
-[]
+["lib/sinatra/base.rb:1849: warning: Rack::Logger is deprecated and will be removed in Rack 3.2."]


  2) Failure:
IntegrationTest#test_with_falcon_does_not_generate_warnings_0 [test/integration_test.rb:58]:
--- expected
+++ actual
@@ -1 +1 @@
-[]
+["lib/sinatra/base.rb:1849: warning: Rack::Logger is deprecated and will be removed in Rack 3.2."]


  3) Failure:
IntegrationTest#test_with_webrick_does_not_generate_warnings_0 [test/integration_test.rb:58]:
--- expected
+++ actual
@@ -1 +1 @@
-[]
+["lib/sinatra/base.rb:1849: warning: Rack::Logger is deprecated and will be removed in Rack 3.2."]

[dentarg]

Relevant PR: https://github.com/rack/rack/pull/2196

Also

• https://github.com/rack/rack-contrib/pull/194
• https://github.com/rack/rack/issues/2190
• https://github.com/rack/rack/pull/2197