[Bug]Coverlet in-process collector is not loaded for version > 1.0.0

During some debugging session for a user I found that if we update collector version > 1.0.0 the collector isn’t loaded. We can see the exception from logs:

"RunSettings": "<RunSettings>\r\n  <DataCollectionRunSettings>\r\n    <DataCollectors>\r\n      <DataCollector friendlyName=\"XPlat code coverage\" enabled=\"True\">\r\n        <Configuration>\r\n          <Format>cobertura</Format>\r\n        </Configuration>\r\n      </DataCollector>\r\n    </DataCollectors>\r\n  </DataCollectionRunSettings>\r\n  <RunSettingsDirectory />\r\n  <RunConfiguration>\r\n    <ResultsDirectory>C:\\git\\coverletissue\\coverletdemo-master\\CoverletDemo.Test\\TestResults</ResultsDirectory>\r\n    <TargetPlatform>X86</TargetPlatform>\r\n    <TargetFrameworkVersion>.NETCoreApp,Version=v2.2</TargetFrameworkVersion>\r\n    <TestAdaptersPaths>C:\\Users\\Marco\\.nuget\\packages\\coverlet.collector\\1.1.0\\build\\netstandard1.0\\;C:\\Users\\Marco\\.nuget\\packages\\microsoft.codecoverage\\16.3.0\\build\\netstandard1.0\\</TestAdaptersPaths>\r\n    <DesignMode>False</DesignMode>\r\n    <CollectSourceInformation>False</CollectSourceInformation>\r\n  </RunConfiguration>\r\n  <InProcDataCollectionRunSettings>\r\n    <InProcDataCollectors>\r\n      <InProcDataCollector assemblyQualifiedName=\"Coverlet.Collector.DataCollection.CoverletInProcDataCollector, coverlet.collector, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null\" friendlyName=\"XPlat Code Coverage\" enabled=\"True\" codebase=\"coverlet.collector.dll\" />\r\n    </InProcDataCollectors>\r\n  </InProcDataCollectionRunSettings>\r\n  <LoggerRunSettings>\r\n    <Loggers>\r\n      <Logger friendlyName=\"Console\" uri=\"logger://microsoft/TestPlatform/ConsoleLogger/v1\" assemblyQualifiedName=\"Microsoft.VisualStudio.TestPlatform.CommandLine.Internal.ConsoleLogger, vstest.console, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a\" codeBase=\"C:\\Program Files\\dotnet\\sdk\\2.2.401\\vstest.console.dll\" enabled=\"True\" />\r\n    </Loggers>\r\n  </LoggerRunSettings>\r\n</RunSettings>",
  "TestExecutionContext": {
    "FrequencyOfRunStatsChangeEvent": 10,
    "RunStatsChangeEventTimeout": "00:00:01.5000000",
    "InIsolation": false,
    "KeepAlive": false,
    "AreTestCaseLevelEventsRequired": false,
    "IsDebug": false,
    "TestCaseFilter": null,
    "FilterOptions": null
  },
  "Package": null
}
...
TpTrace Error: 0 : 24420, 4, 2019/09/30, 16:41:29.699, 4430772168947, testhost.dll, InProcDataCollectionExtensionManager: Error occured while Initializing the datacollectors : System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.DataCollection.InProcDataCollector.CreateObjectFromType(Type type)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.DataCollection.InProcDataCollectionExtensionManager.CreateDataCollector(String assemblyQualifiedName, String codebase, XmlElement configuration, TypeInfo interfaceTypeInfo)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.DataCollection.InProcDataCollectionExtensionManager.InitializeInProcDataCollectors(String runSettings)

Run settings above(injected) wants to load version 1.0.0.0. but at the moment we are on 1.1.0.0 For now the workaround is override inproc version

<?xml version="1.0" encoding="utf-8" ?>
<RunSettings>
  <DataCollectionRunSettings>
    <DataCollectors>
      <DataCollector friendlyName="XPlat code coverage">
        <Configuration>
          <Format>cobertura</Format>
        </Configuration>
      </DataCollector>
    </DataCollectors>
  </DataCollectionRunSettings>
  <InProcDataCollectionRunSettings>
    <InProcDataCollectors>
      <InProcDataCollector assemblyQualifiedName="Coverlet.Collector.DataCollection.CoverletInProcDataCollector, coverlet.collector, Version=1.1.0.0, Culture=neutral, PublicKeyToken=null"
                     friendlyName="XPlat Code Coverage"
                     enabled="True"
                     codebase="coverlet.collector.dll" />
    </InProcDataCollectors>
  </InProcDataCollectionRunSettings>
</RunSettings>

Issue raise with all runtime version(>= 2.2)

The worste thing is that there is no warning/error shown on console.

cc: @vagisha-nidhi @PBoraMSFT @cltshivash @tonerdo

[vagisha-nidhi]

@tracker1 The latest preview release contains this fix. Please use that to get yourself unblocked.

[MarcoRossignoli]

I’m a coverlet co-maintainer I don’t work on vstest team(unfortunately 😄) so I don’t know release plan, we need to ask to @vagisha-nidhi BTW you can use preview relase updating package ref in your proj with last one https://www.nuget.org/packages/Microsoft.NET.Test.Sdk/16.5.0-preview-20191115-01