Temporarily trim Travis config for faster testing

Author: mattbrictson

.travis.yml

@@ -34,117 +34,10 @@ before_script:
 script: "script/run_build 2>&1"
 
 rvm:
-  - 1.8.7
   - 2.4.2
-  - 2.3.5
-  - 2.2
-  - 2.1
-  - 2.0.0
-  - 1.9.3
-  - 1.9.2
 
 env:
-  - RAILS_VERSION='~> 4.2.0'
-  - RAILS_VERSION=4-2-stable
-  - RAILS_VERSION='~> 4.1.0'
-  - RAILS_VERSION=4-1-stable
-  - RAILS_VERSION='~> 4.0.4'
-  - RAILS_VERSION=4-0-stable
-  - RAILS_VERSION='~> 3.2.17'
-  - RAILS_VERSION=3-2-stable
-  - RAILS_VERSION='~> 3.1.12'
-  - RAILS_VERSION='~> 3.0.20'
-
-matrix:
-  include:
-    # Rails 5.x only supports 2.2+
-    - rvm: 2.2.2
-      env: RAILS_VERSION=master
-    - rvm: 2.2.2
-      env: RAILS_VERSION=5-0-stable
-    - rvm: 2.2.2
-      env: RAILS_VERSION=5.1.0
-    - rvm: 2.3.5
-      env: RAILS_VERSION=master
-    - rvm: 2.3.5
-      env: RAILS_VERSION=5-0-stable
-    - rvm: 2.3.5
-      env: RAILS_VERSION=5.1.0
-    - rvm: 2.4.2
-      env: RAILS_VERSION=master
-    - rvm: 2.4.2
-      env: RAILS_VERSION=5-0-stable
-    - rvm: 2.4.2
-      env: RAILS_VERSION=5.1.0
-  exclude:
-    # 3.0.x is not supported on MRI 2.0+
-    - rvm: 2.0.0
-      env: RAILS_VERSION='~> 3.0.20'
-    - rvm: 2.1
-      env: RAILS_VERSION='~> 3.0.20'
-    - rvm: 2.2
-      env: RAILS_VERSION='~> 3.0.20'
-    - rvm: 2.3.5
-      env: RAILS_VERSION='~> 3.0.20'
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 3.0.20'
-    # 4.x is not supported on MRI ruby-1.8.7 or 1.9.2
-    - rvm: 1.8.7
-      env: RAILS_VERSION='~> 4.0.4'
-    - rvm: 1.9.2
-      env: RAILS_VERSION='~> 4.0.4'
-    - rvm: 1.8.7
-      env: RAILS_VERSION=4-0-stable
-    - rvm: 1.9.2
-      env: RAILS_VERSION=4-0-stable
-    - rvm: 1.8.7
-      env: RAILS_VERSION='~> 4.1.0'
-    - rvm: 1.9.2
-      env: RAILS_VERSION='~> 4.1.0'
-    - rvm: 1.8.7
-      env: RAILS_VERSION=4-1-stable
-    - rvm: 1.9.2
-      env: RAILS_VERSION=4-1-stable
-    - rvm: 1.8.7
-      env: RAILS_VERSION='~> 4.2.0'
-    - rvm: 1.9.2
-      env: RAILS_VERSION='~> 4.2.0'
-    - rvm: 1.8.7
-      env: RAILS_VERSION=4-2-stable
-    - rvm: 1.9.2
-      env: RAILS_VERSION=4-2-stable
-    # MRI 2.2+ is not supported on a few versions
-    - rvm: 2.2
-      env: RAILS_VERSION='~> 3.1.12'
-    - rvm: 2.3.5
-      env: RAILS_VERSION='~> 3.1.12'
-    # MRI 2.4+ is not supported on a few versions
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 4.1.0'
-    - rvm: 2.4.2
-      env: RAILS_VERSION=4-1-stable
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 4.0.4'
-    - rvm: 2.4.2
-      env: RAILS_VERSION=4-0-stable
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 3.2.17'
-    - rvm: 2.4.2
-      env: RAILS_VERSION=3-2-stable
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 3.1.12'
-  allow_failures:
-    - rvm: 2.2.2
-      env: RAILS_VERSION=master
-    - rvm: 2.3.5
-      env: RAILS_VERSION=master
-    - rvm: 2.4.2
-      env: RAILS_VERSION=master
-    - rvm: 2.4.2
-      env: RAILS_VERSION='~> 4.2.0'
-    - rvm: 2.4.2
-      env: RAILS_VERSION=4-2-stable
-  fast_finish: true
+  - RAILS_VERSION='~> 5.1.0'
 
 branches:
   only: