Unsupported log file format. Latest supported version is 9, the log file has version 13.

[smoothdeveloper]

After updating VS to 16.10 release, I'm getting this out of MSBuild tasks:

(Unsupported log file format. Latest supported version is 9, the log file has version 13.)

Current work around is to adjust Fake.DotNet.MSBuildParams:

DisableInternalBinLog = true

FAKE version: 5.20.4

[github-actions]

Welcome to the FAKE community! Thank you so much for creating your first issue and therefore improving the project!

[smoothdeveloper]

If this could be caught and provide guidance as to which setting to adjust in the handling of this error, it would be stellar, because I think MS is going to keep adjusting their log file version going forward.

[0x53A]

afaik you need a new version of MSBuild.StructuredLogger.

If I remember right you can just add the latest version to your own dependencies block, then it should work.

[smoothdeveloper]

Thanks @0x53A, I'll give it a try when I deal with the build scripts again.

Any pointers on where / how this is all used in FAKE code itself, in case someone wants to investigate how to better report to / guide the user for similar upcoming issues on msbuild releases in the future?

[Bomret]

Just as a question but why does FAKE fail at all if it cannot read the MSBuild log file instead of just printing a warning?

[DanJensen]

Ever since installing 16.10, I'm getting errors with DotNet.build as well. The error message is complaining about a string format ArgumentNullException. However I'm posting this here because I noticed the stack trace also contains a reference to BinLog.fs. I can't find a way to disable that for dotnet.build though. Here's the stack trace:

Script reported an error:
-> BuildFailedException: Target 'BuildDotnetCore' failed.
StackTrace:
at Fake.Core.TargetModule.raiseIfError(OptionalTargetContext context) in D:\a\1\s\src\app\Fake.Core.Target\Target.fs:line 991
at Fake.Core.TargetModule.runOrDefaultWithArguments(String defaultTarget) in D:\a\1\s\src\app\Fake.Core.Target\Target.fs:line 1177
at <StartupCode$build_4B7615B8BBDC61C7A4F81F329BE7FB8C5DB6F3BD3B83224AD9457B2BEC598B92>.$Build$fsx.main@() in C:\dev\wsos\BuildScripts\build.fsx:line 1232
-> One or more errors occurred. (Value cannot be null.
Parameter name: format)
-> ArgumentNullException: Value cannot be null.
Parameter name: format
StackTrace:
at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args)
at System.String.Format(String format, Object[] args)
at Microsoft.Build.Logging.StructuredLogger.BuildEventArgsReader.ReadTargetSkippedEventArgs() in C:\MSBuildStructuredLog\src\StructuredLogger\BinaryLogger\BuildEventArgsReader.cs:line 298
at Microsoft.Build.Logging.StructuredLogger.BuildEventArgsReader.Read() in C:\MSBuildStructuredLog\src\StructuredLogger\BinaryLogger\BuildEventArgsReader.cs:line 171
at Microsoft.Build.Logging.StructuredLogger.BinLogReader.ReadRecordsFromDecompressedStream(Stream decompressedStream)+MoveNext() in C:\MSBuildStructuredLog\src\StructuredLogger\BinaryLogger\BinLogReader.cs:line 272
at Microsoft.FSharp.Collections.Internal.IEnumerator.choose@171.System.Collections.IEnumerator.MoveNext() in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 178
at Microsoft.FSharp.Collections.SeqModule.ToList[T](IEnumerable1 source) at Fake.DotNet.MSBuildBinLog.getErrorsAndWarnings(String binLogFilePath) in D:\a\1\s\src\app\Fake.DotNet.MSBuild\BinLog.fs:line 32 at Fake.DotNet.MSBuild.handleAfterRun(String command, FSharpOption1 binLogPath, Int32 exitCode, String project) in D:\a\1\s\src\app\Fake.DotNet.MSBuild\MSBuild.fs:line 738
at Fake.DotNet.DotNet.build(FSharpFunc2 setParams, String project) in D:\a\1\s\src\app\Fake.DotNet.Cli\DotNet.fs:line 1515 at Build.CompileDotnetCore@618-1.Invoke(String project) in C:\dev\wsos\BuildScripts\build.fsx:line 618 at Microsoft.FSharp.Collections.SeqModule.Iterate[T](FSharpFunc2 action, IEnumerable`1 source) in F:\workspace_work\1\s\src\fsharp\FSharp.Core\seq.fs:line 497
at Build.clo@937-53.Invoke(TargetParameter _arg23) in C:\dev\wsos\BuildScripts\build.fsx:line 938
at Fake.Core.TargetModule.runSimpleInternal(TargetContext context, Target target) in D:\a\1\s\src\app\Fake.Core.Target\Target.fs:line 300

[brase]

If I remember right you can just add the latest version to your own dependencies block, then it should work.

Or simply deleting the build.fsx.lock-File.

[pchinery]

This is a bit of an odd process, but simply changing the actual dependency in you lock file (paket.lock or build.fsx.lock, depending on your setup) just works fine:

MSBuild.StructuredLogger (2.1.507)

[knocte]

Upgrading MSBuild.StructuredLogger didn't work for me. I've tried 3 different approaches already and my AppVeyor CI still fails: fsprojects/FSharpx.Collections#176

Any hint from someone please?

[pchinery]

You still have an old MSBuild.StructuredLogger in the FakeGroup. You can see this in the AppVeyor logs:

Downloading MSBuild.StructuredLogger 2.1.215 (FakeBuild)

you can update the lock file for that and it should fix the problem