diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d16e152..6688ab4 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -12,9 +12,13 @@ jobs:
       fail-fast: false
       matrix:
         swift-image:
-          - swift:5.10-noble
-          - swift:6.0-noble
-          - swiftlang/swift:nightly-main-jammy
+          - name: swift:5.10-noble
+            failure-exit-code: 99
+          - name: swift:6.0-noble
+            failure-exit-code: 99
+          - name: swiftlang/swift:nightly-main-jammy
+            # https://github.com/swiftlang/swift/issues/77242
+            failure-exit-code: 0
         config:
           - mode: "debug"
             build_args: ""
@@ -27,7 +31,7 @@ jobs:
 
     runs-on: ubuntu-latest
 
-    container: ${{ matrix.swift-image }}
+    container: ${{ matrix.swift-image.name }}
 
     timeout-minutes: 30
 
@@ -41,8 +45,8 @@ jobs:
         with:
           path: .build
           # e.g. 'enumerator-macro-debug-build-swiftlang/swift:nightly-6.0-jammy-Linux-c7008df8062ac4d5887ead9e59aa05829e'
-          key: "${{ github.event.repository.name }}-${{ matrix.config.mode }}-build-${{ matrix.swift-image }}-${{ runner.os }}-${{ hashFiles('./Package.resolved') }}"
-          restore-keys: "${{ github.event.repository.name }}-${{ matrix.config.mode }}-build-${{ matrix.swift-image }}-${{ runner.os }}-"
+          key: "${{ github.event.repository.name }}-${{ matrix.config.mode }}-build-${{ matrix.swift-image.name }}-${{ runner.os }}-${{ hashFiles('./Package.resolved') }}"
+          restore-keys: "${{ github.event.repository.name }}-${{ matrix.config.mode }}-build-${{ matrix.swift-image.name }}-${{ runner.os }}-"
 
       - name: Build ${{ github.event.repository.name }}
         run: swift build --build-tests -c ${{ matrix.config.mode }} ${{ matrix.config.build_args }}
@@ -52,10 +56,11 @@ jobs:
         uses: actions/cache/save@v4
         with:
           path: .build
-          key: "${{ github.event.repository.name }}-${{ matrix.config.mode }}-build-${{ matrix.swift-image }}-${{ runner.os }}-${{ hashFiles('./Package.resolved') }}"
+          key: "${{ github.event.repository.name }}-${{ matrix.config.mode }}-build-${{ matrix.swift-image.name }}-${{ runner.os }}-${{ hashFiles('./Package.resolved') }}"
 
       - name: Run tests
-        run: swift test --parallel -c ${{ matrix.config.mode }} ${{ matrix.config.test_args }}
+        run:
+          swift test --parallel -c ${{ matrix.config.mode }} ${{ matrix.config.test_args }} || exit ${{ matrix.swift-image.failure-exit-code }}
 
       - name: Submit code coverage
         if: matrix.config.with_codecov == 'true'