Describe the bug

After the build 2020 I update VS2019 to v16.6 then my dotnet try project cannot verify successfully.

Did this error occur while using dotnet try or online?

• dotnet-try
• .NET Jupyter Notebook
• online

What kind of error was it?

• User Interface (UI): For example the output never displayed
• Service Error: For example "The service is temporarily unavailable. We are working on it"
• Other:

Screenshots

If applicable, add screenshots to help explain your problem.

Please complete the following:

• OS
  • Windows 10
  • macOS
  • Linux (Please specify distro)
  • iOS
  • Android
• Browser
  • Chrome
  • Edge
  • Safari

The only change I remember is that I updated VS2019 to v16.6.

dotnet try version: 1.0.19553.4+001b36724d769e844a53b22e3833a23caed3dc68
dotnet version: 3.1.300
VS2019 version: 16.6.0

Steps:

• Use dotnet try to create a demo project.
• Run dotnet try verify.
• The below error shows:

Unhandled exception: System.AggregateException: One or more errors occurred. (Unsupported log file format. Latest supported version is 7, the log file has version 9.)
---> System.NotSupportedException: Unsupported log file format. Latest supported version is 7, the log file has version 9.
at Microsoft.Build.Logging.StructuredLogger.BinLogReader.Replay(Stream stream) in C:\MSBuildStructuredLog\src\StructuredLogger\BinaryLogger\BinLogReader.cs:line 53
at Microsoft.Build.Logging.StructuredLogger.BinLogReader.Replay(String sourceFilePath) in C:\MSBuildStructuredLog\src\StructuredLogger\BinaryLogger\BinLogReader.cs:line 37
at Buildalyzer.AnalyzerManager.Analyze(String binLogPath, IEnumerable`1 buildLoggers)
at WorkspaceServer.Packaging.Package.LoadDesignTimeBuildFromBuildLogFile(Package package, FileSystemInfo binLog)
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait()
at WorkspaceServer.Packaging.Package.TryLoadDesignTimeBuildFromBuildLog()
at WorkspaceServer.Packaging.Package..ctor(String name, IPackageInitializer initializer, DirectoryInfo directory, IScheduler buildThrottleScheduler)
at WorkspaceServer.Packaging.RebuildablePackage..ctor(String name, IPackageInitializer initializer, DirectoryInfo directory, IScheduler buildThrottleScheduler)
at WorkspaceServer.Packaging.PackageBuilder.GetPackage(Budget budget)
at WorkspaceServer.PackageRegistry.<>c__DisplayClass10_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at WorkspaceServer.PackageRegistry.Get[T](String packageName, Budget budget)
at WorkspaceServer.Servers.Roslyn.RoslynWorkspaceServer.CompileWorker(Workspace workspace, BufferId activeBufferId, Budget budget)
at WorkspaceServer.Servers.Roslyn.RoslynWorkspaceServer.Compile(WorkspaceRequest request, Budget budget)
at WorkspaceServer.Servers.WorkspaceServerMultiplexer.Compile(WorkspaceRequest request, Budget budget)
at MLS.Agent.CommandLine.VerifyCommand.<>c__DisplayClass0_0.<g__ReportCompileResults|3>d.MoveNext() in F:\workspace_work\1\s\MLS.Agent\CommandLine\VerifyCommand.cs:line 192
--- End of stack trace from previous location where exception was thrown ---
at MLS.Agent.CommandLine.VerifyCommand.Do(VerifyOptions verifyOptions, IConsole console, StartupOptions startupOptions) in F:\workspace_work\1\s\MLS.Agent\CommandLine\VerifyCommand.cs:line 87
at System.CommandLine.Invocation.CommandHandler.GetResultCodeAsync(Object value, InvocationContext context)
at System.CommandLine.Invocation.ModelBindingCommandHandler.InvokeAsync(InvocationContext context)
at System.CommandLine.Invocation.InvocationPipeline.<>c__DisplayClass4_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at MLS.Agent.CommandLine.CommandLineParser.<>c__DisplayClass8_0.<b__7>d.MoveNext() in F:\workspace_work\1\s\MLS.Agent\CommandLine\CommandLineParser.cs:line 180
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__22_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c__DisplayClass8_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__7_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__6_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__20_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass4_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__23_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c__DisplayClass5_0.<b__0>d.MoveNext()

Sometimes the below error also occurs:

Unhandled exception: System.InvalidOperationException: No design time or full build available
at WorkspaceServer.Packaging.Package.CreateRoslynWorkspace()
at WorkspaceServer.Packaging.Package.ProcessFullBuildRequest(Budget budget)
at WorkspaceServer.Packaging.Package.b__54_0(Budget budget)
at WorkspaceServer.Servers.Roslyn.PackageExtensions.GetCompilation(IPackage package, IReadOnlyCollection1 sources, SourceCodeKind sourceCodeKind, IEnumerable1 defaultUsings, Func`1 workspaceFactory, Budget budget)
at WorkspaceServer.Servers.Roslyn.RoslynWorkspaceServer.CompileWorker(Workspace workspace, BufferId activeBufferId, Budget budget)
at WorkspaceServer.Servers.Roslyn.RoslynWorkspaceServer.Compile(WorkspaceRequest request, Budget budget)
at WorkspaceServer.Servers.WorkspaceServerMultiplexer.Compile(WorkspaceRequest request, Budget budget)
at MLS.Agent.CommandLine.VerifyCommand.<>c__DisplayClass0_0.<g__ReportCompileResults|3>d.MoveNext() in F:\workspace_work\1\s\MLS.Agent\CommandLine\VerifyCommand.cs:line 192
--- End of stack trace from previous location where exception was thrown ---
at MLS.Agent.CommandLine.VerifyCommand.Do(VerifyOptions verifyOptions, IConsole console, StartupOptions startupOptions) in F:\workspace_work\1\s\MLS.Agent\CommandLine\VerifyCommand.cs:line 87
at System.CommandLine.Invocation.CommandHandler.GetResultCodeAsync(Object value, InvocationContext context)
at System.CommandLine.Invocation.ModelBindingCommandHandler.InvokeAsync(InvocationContext context)
at System.CommandLine.Invocation.InvocationPipeline.<>c__DisplayClass4_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at MLS.Agent.CommandLine.CommandLineParser.<>c__DisplayClass8_0.<b__7>d.MoveNext() in F:\workspace_work\1\s\MLS.Agent\CommandLine\Co--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__22_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c__DisplayClass8_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__7_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__6_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__20_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Builder.CommandLineBuilderExtensions.<>c__DisplayClass4_0.<b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c.<b__23_0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.CommandLine.Invocation.InvocationExtensions.<>c__DisplayClass5_0.<b__0>d.MoveNext()