env matrix does not set env vars

.github/workflows/build.yml

@@ -21,21 +21,22 @@ jobs:
           - 2.6
           - 2.5
           - jruby-9.2.8.0
-        env:
-          - RAILS='~> 4.2.0' SQLITE_VERSION='~> 1.3.6'
-          - RAILS='~> 5.0.0' SQLITE_VERSION='~> 1.3.6'
-          - RAILS='~> 5.1.0'
-          - RAILS='~> 5.2.0'
-          - RAILS='~> 6.1.0'
-          - RAILS='~> 7.0.0.alpha2'
-          - RAILS='edge'
+        rails:
+          - '~> 4.2.0'
+          - '~> 5.0.0'
+          - '~> 5.1.0'
+          - '~> 5.2.0'
+          - '~> 6.1.0'
+          - '~> 7.0.0.alpha2'
+          - 'edge'
         exclude:
         # Rails edge is now 7.x and requires ruby 2.7
-        - env: RAILS='edge'
+        - rails: 'edge'
           ruby: 2.6
-        - env: RAILS='edge'
+        - rails: 'edge'
           ruby: 2.5
-
+    env:
+      RAILS: ${{ matrix.rails }}
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1