...

.github/workflows/cmake.yml

@@ -3,6 +3,7 @@ name: Build
 on: [push, pull_request]
 
 jobs:
+      matrix:
       matrix:
         os: [ubuntu-20.04]
         compiler: [g++-7, g++-8, g++-9, g++-10, clang++-8, clang++-9, clang++-10]