Update dev files - .travis.yml, .rubocop.yml, Gemfile

.rubocop.yml

@@ -1,6 +1,6 @@
 AllCops:
   DisabledByDefault: true
-  TargetRubyVersion: 1.9.3
+  TargetRubyVersion: 2.2
   DisplayCopNames: true
   StyleGuideCopsOnly: false
   Exclude:
@@ -51,41 +51,5 @@ Style/MethodDefParentheses:
 Style/TrailingCommaInArguments:
   Enabled: true
 
-Performance/Count:
-  Enabled: true
-
-Performance/Detect:
-  Enabled: true
-
-Performance/EndWith:
-  Enabled: true
-
-Performance/FlatMap:
-  Enabled: true
-
-Performance/HashEachMethods:
-  Enabled: true
-
-Performance/RangeInclude:
-  Enabled: true
-
-Performance/RedundantMerge:
-  Enabled: true
-
-Performance/RedundantSortBy:
-  Enabled: true
-
-Performance/ReverseEach:
-  Enabled: true
-
-Performance/Sample:
-  Enabled: true
-
-Performance/Size:
-  Enabled: true
-
-Performance/StartWith:
-  Enabled: true
-
-Performance/TimesMap:
+Performance:
   Enabled: true

.travis.yml

@@ -5,30 +5,36 @@ language: ruby
 cache: bundler
 before_install:
   # https://github.com/travis-ci/travis-ci/issues/9383#issuecomment-377680108
-  - gem install bundler
-branches:
-  only:
-    - "master"
+  # recent versions of RubyGems include bundler
+  - gem update --system
+
 rvm:
   - 2.2.10
   - 2.3.7
   - 2.4.4
   - 2.5.1
   - ruby-head
-  - jruby-9.1.17.0
-  - jruby-head
-  - rbx-3
+  - jruby-9.2.0.0
+
 matrix:
   fast_finish: true
   include:
     - rvm: ruby-head
       env: RUBYOPT="--jit"
-  allow_failures:
+    - rvm: 2.3.7
+      os: osx
+    - rvm: 2.5
+      os: osx
     - rvm: jruby-head
     - rvm: rbx-3
+      
+  allow_failures:
     - rvm: ruby-head
     - rvm: ruby-head
       env: RUBYOPT="--jit"
+    - rvm: jruby-head
+    - rvm: rbx-3
+
 env:
   global:
     - TESTOPTS="-v"

Gemfile

@@ -6,12 +6,12 @@ gem "rdoc"
 gem "rake-compiler"
 
 gem "rack", "< 3.0"
-gem "minitest", "~> 5.9"
+gem "minitest", "~> 5.11"
 gem "minitest-retry"
 
 gem "jruby-openssl", :platform => "jruby"
 
-gem "rubocop", "~> 0.50.0"
+gem "rubocop", "~> 0.58.0"
 
 if %w(2.2.7 2.2.8 2.2.9 2.2.10 2.3.4 2.4.1).include? RUBY_VERSION
   gem "stopgap_13632", "~> 1.0", :platforms => ["mri", "mingw", "x64_mingw"]

test/test_puma_server_ssl.rb

@@ -19,7 +19,7 @@ end
 DISABLE_SSL = begin
               Puma::Server.class
               Puma::MiniSSL.check
-              puts "", RUBY_REVISION
+              puts "", RUBY_DESCRIPTION
               puts "Puma::MiniSSL OPENSSL_LIBRARY_VERSION: #{Puma::MiniSSL::OPENSSL_LIBRARY_VERSION}",
                    "                      OPENSSL_VERSION: #{Puma::MiniSSL::OPENSSL_VERSION}", ""
             rescue