Assert.Throws() Failure
Expected: typeof(System.InvalidOperationException)
Actual: (No exception was thrown)
at XmlSerializerTests.Xml_ReadOnlyCollection()
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Assert.Contains() Failure
Not found: Parameterless constructor is required for collections and enumerators.
In value: There is an error in XML document (4, 14). : Specified method is not supported.
at XmlSerializerTests.Xml_ImmutableCollections(Type type, Object collection, Type createException, Type addException, String expectedXml, String exMsg)
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Failing tests:
Likely introduced in #73729
Originaly reported in #74076
Sample test results: https://dev.azure.com/dnceng/public/_build/results?buildId=1948701&view=results
Sample failures: