Swift 5.6

.github/workflows/nightly.yml

@@ -12,12 +12,12 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
     - name: SPM tests
-      run: swift test --sanitize=thread
+      run: swift test
   linux:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        image: ['nightly-5.6-bionic', 'nightly-5.6-focal', 'nightly-5.6-centos8', 'nightly-5.6-amazonlinux2']
+        image: ['nightly-bionic', 'nightly-focal', 'nightly-centos8', 'nightly-amazonlinux2']
     
     container:
       image: swiftlang/swift:${{ matrix.image }}