SonarQube.Scanner.MSBuild在连续调用时失败；无法清理.sonarqube目录

基本上，我需要连续调用msbuild三次。这三个版本中的每一个都需要进行扫描。第一个可以，但是第二个和第三个失败，因为扫描程序无法清除.sonarqube目录。
我收到“访问路径'SonarQube.Common.dll'的访问被拒绝。即使我在两次生成之间放置60秒的延迟，.dll仍在使用中。

这是输出的代码段：

C:\home\repos\SteveKTemp>SonarQube.Scanner.MSBuild.exe begin /k:com.carestream.SteveK_Backend /n:SteveK_Backend /v:1.0 /s:C:\home\repos\SteveKTemp\src\Backend_Sonar_Properties.xml 
SonarQube Scanner for MSBuild 3.0.2
Loading analysis properties from C:\home\repos\SteveKTemp\src\Backend_Sonar_Properties.xml
sonar.verbose=true was specified - setting the log verbosity to 'Debug'
Pre-processing started.
Preparing working directories...
Using environment variables to determine the download directory...
Removing the existing directory: C:\home\repos\SteveKTemp\.sonarqube
Creating directory: C:\home\repos\SteveKTemp\.sonarqube
12:50:27.707  12:50:27.703  Loading analysis properties from C:\home\repos\SteveKTemp\src\Backend_Sonar_Properties.xml
12:50:27.707  12:50:27.707  sonar.verbose=true was specified - setting the log verbosity to 'Debug'
12:50:27.708  Updating build integration targets...
12:50:27.709  The file SonarQube.Integration.ImportBefore.targets is up to date at C:\Users\rocbuilder\AppData\Local\Microsoft\MSBuild\15.0\Microsoft.Common.targets\ImportBefore
12:50:27.709  The file SonarQube.Integration.ImportBefore.targets is up to date at C:\Users\rocbuilder\AppData\Local\Microsoft\MSBuild\14.0\Microsoft.Common.targets\ImportBefore
12:50:27.71  The file SonarQube.Integration.ImportBefore.targets is up to date at C:\Users\rocbuilder\AppData\Local\Microsoft\MSBuild\12.0\Microsoft.Common.targets\ImportBefore
12:50:27.711  Installed SonarQube.Integration.targets to C:\home\repos\SteveKTemp\.sonarqube\bin\targets
12:50:27.712  Creating config and output folders...
...

C:\home\repos\SteveKTemp>SonarQube.Scanner.MSBuild.exe end 
SonarQube Scanner for MSBuild 3.0.2
Default properties file was found at C:\SonarQube\Scanners\sonar-scanner-msbuild-3.0.2.656\SonarQube.Analysis.xml
Loading analysis properties from C:\SonarQube\Scanners\sonar-scanner-msbuild-3.0.2.656\SonarQube.Analysis.xml
Post-processing started.
12:52:04.002  Loading the SonarQube analysis config from C:\home\repos\SteveKTemp\.sonarqube\conf\SonarQubeAnalysisConfig.xml
12:52:04.003  Not running under TeamBuild
12:52:04.004  Analysis base directory: C:\home\repos\SteveKTemp\.sonarqube
Build directory: 
Bin directory: C:\home\repos\SteveKTemp\.sonarqube\bin
Config directory: C:\home\repos\SteveKTemp\.sonarqube\conf
Output directory: C:\home\repos\SteveKTemp\.sonarqube\out
Config file: C:\home\repos\SteveKTemp\.sonarqube\conf\SonarQubeAnalysisConfig.xml

...
:: CAUSE A DELAY BETWEEN 1st and 2nd Scan

C:\home\repos\SteveKTemp>PING localhost -n61  1>NUL 


C:\home\repos\SteveKTemp>SonarQube.Scanner.MSBuild.exe begin /k:com.carestream.SteveK_WebCSharp /n:SteveK_WebCSharp /v:1.0 /s:C:\home\repos\SteveKTemp\src\Web_Sonar_Properties.xml 
SonarQube Scanner for MSBuild 3.0.2
Loading analysis properties from C:\home\repos\SteveKTemp\src\Web_Sonar_Properties.xml
sonar.verbose=true was specified - setting the log verbosity to 'Debug'
Pre-processing started.
Preparing working directories...
Using environment variables to determine the download directory...
Removing the existing directory: C:\home\repos\SteveKTemp\.sonarqube
Failed to create an empty directory 'C:\home\repos\SteveKTemp\.sonarqube'. Please check that there are no open or read-only files in the directory and that you have the necessary read/write permissions.
  Detailed error message: Access to the path 'SonarQube.Common.dll' is denied.
Pre-processing failed. Exit code: 1

如果能找到解决此问题的方法，我将不胜感激。

谢谢。