我有一个包含许多UnitTests的项目。当Test-> Run-> All Tests时，所有测试均成功。但是如果Test-> Analyze Code Coverage，则使用内部Process.Start（）进行的测试将失败。
我正在将VS 2017 Enterprise与Microsoft.NET.Test.Sdk 15.8.0，MSTest.TestAdapter 1.2.1和MSTest.TestFramework 1.2.1一起使用。我项目的框架是NetCore 2.0。
以下是来自Process.StandardError的错误消息：
[Error] System.ArgumentException: Item has already been added. Key in dictionary: 'CODE_COVERAGE_SESSION_NAME' Key being added: 'CODE_COVERAGE_SESSION_NAME'
[Error] at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)
[Error] at System.Environment.ToHashtable(IEnumerable`1 pairs)
[Error] at System.Environment.GetEnvironmentVariables()
[Error] at System.Diagnostics.ProcessStartInfo.get_Environment()
[Error] at Microsoft.DotNet.Cli.Utils.ForwardingAppImplementation.GetProcessStartInfo()
[Error] at Microsoft.DotNet.Cli.Utils.MSBuildForwardingAppWithoutLogging.GetProcessStartInfo()
[Error] at Microsoft.DotNet.Tools.MSBuild.MSBuildForwardingApp.GetProcessStartInfo()
[Error] at Microsoft.DotNet.Tools.MSBuild.MSBuildForwardingApp.Execute()
[Error] at Microsoft.DotNet.Tools.Restore.RestoreCommand.Run(String[] args)
[Error] at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, ITelemetry telemetryClient)
[Error] at Microsoft.DotNet.Cli.Program.Main(String[] args)
[Error]
有人知道如何解决这个奇怪的问题吗？谢谢〜