SonarQube.Integration.targets process conflicts wh

问题:

I am having an issue with building a project, with SonarQube integrated, on TFS 2015.

When I build this project without SonarQube, it builds fine. However, when SonarQube runs alongside this build, one of the project files fails to compile (specifically, it's a unit test project). I get the following error:

D:\Builds\....\Project\.sonarqube\bin\targets\SonarQube.Integration.targets (235, 0)
Could not write lines to file "D:\Builds\.....\.sonarqube\out\\f_AnyCPU_Release_0213\FilesToAnalyze.txt".

The process cannot access the file 'D:\Builds\.....\Project\.sonarqube\out\f_AnyCPU_Release_0213\FilesToAnalyze.txt'` 
because it is being used by another process. 
[D:\Builds\.....\Project\\src\Apps\Solution\obj\Debug\Fakes\spi\f.csproj]

If anyone can offer some hints as to why this is happening, it'd be much appreciated. I've tried recreating this error with a few projects that I've written but it doesn't seem to happen. It might be specific to the project.