https://github.com/xunit/xunit/issues/244#issuecomment-68325962
@ -37,4 +37,5 @@ using Xunit;
[assembly: AssemblyFileVersion("1.0.0.0")]
// Don't run tests in parallel.
[assembly: CollectionBehavior(DisableTestParallelization = true)]
[assembly: CollectionBehavior(MaxParallelThreads = 1)]