Only capture stderr on Ruby 2.1 on CI

Always show warnings in tests

Author: bf4

.travis.yml

@@ -8,7 +8,6 @@ cache:
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1
   - 2.2
   - ruby-head
   - rbx-2
@@ -17,7 +16,7 @@ install:
   - bundle install --retry=3
 
 script:
-  - env CAPTURE_STDERR=false bundle exec rake ci
+  - env CAPTURE_STDERR=${CAPTURE_STDERR:-false} bundle exec rake ci
 
 env:
   - "RAILS_VERSION=4.0"
@@ -27,6 +26,8 @@ env:
 
 matrix:
   include:
+  - rvm: 2.1
+    env: CAPTURE_STDERR=true
   - rvm: jruby-19mode
     env: JRUBY_OPTS='--server -Xcompile.invokedynamic=false -Xcli.debug=true --debug'
   allow_failures:

test/test_helper.rb

@@ -49,6 +49,8 @@ def Minitest.after_run(&block)
 if ENV['CAPTURE_STDERR'] !~ /false|1/i
   require 'capture_warnings'
   CaptureWarnings.new(_fail_build = true).execute!
+else
+  $VERBOSE = true
 end
 
 require 'active_model_serializers'