fix: integration tests in release mode

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
       run: |
         cd build
         sudo cmake --build . --target install
-        ctest
+        ctest --output-on-failure
     - name: pack
       if: matrix.build == 'shared-libsystemd' && matrix.os == 'ubuntu-20.04'
       run: |

tests/integrationtests/DBusGeneralTests.cpp

@@ -116,7 +116,8 @@ TEST_F(AConnection, CanAddFloatingMatchRule)
     };
     con->addMatch(matchRule, std::move(callback), sdbus::floating_slot);
     m_adaptor->emitSimpleSignal();
-    assert(waitUntil(matchingMessageReceived, 2s));
+    [[maybe_unused]] auto gotMessage = waitUntil(matchingMessageReceived, 2s);
+    assert(gotMessage);
     matchingMessageReceived = false;
 
     con.reset();