PartCover控制台生成空输出xml

我正在使用partcover来为一堆mstest驱动的单元测试生成codecoverage.

我使用命令行:

PartCover.exe --target "c:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\MSTest.exe" --target-args "/testcontainer:c:\CrusieControlProjects\AcademyPro\AcademyTests\bin\Release\AcademyTests.dll" --include [AcademyPro*]*

这运行,所有测试都通过,但我最终输出:

Results file:      C:\Program Files\Gubka Bob\PartCover .NET 2.3\TestResults\Administrator_PSLV22 2009-03-31 17_54_18.trx
Run Configuration: Default Run Configuration
Target PageFaultCount: 10565
Target PagefileUsage: 27631616
Target PeakPagefileUsage: 31297536
Target PeakWorkingSetSize: 31498240
Target QuotaNonPagedPoolUsage: 8180
Target QuotaPagedPoolUsage: 217124
Target QuotaPeakNonPagedPoolUsage: 13012
Target QuotaPeakPagedPoolUsage: 255524
Target WorkingSetSize: 30310400
request target shutdown

当我使用--output命令运行时,xml文件最终只是

为什么会发生这种情况？