Assembly resolving not working with type provider

[DanielFabian]

We use FSharp.Data for some of our processing. Since FSharp.Data is referenced in our project, I assume FSharp.Formatting pulls in the dependency. This should be ok, since it is also part of the build output. However, FSharp.Formatting also tries to pull in FSharp.Data.DesignTime which is not part of the build output. I added the path to FSharp.Data.DesignTime from the NuGet packages directory to the libDirs when calling the MetadataFormat.Generate call, but it still fails with the following error:

[17:20:37] :     [Step 2/2] Generating index.html ...
[17:20:37] :     [Step 2/2] Generating proview-index.html ...
[17:20:37] :     [Step 2/2] Generating reference-index.html ...
[17:20:39] :     [Step 2/2] [0 sec] Reading assembly: C:\BuildAgent\work\9cca5f94ac237474\results\InCube.Base.dll
[17:20:39] :     [Step 2/2] [0 sec] Parsing assembly
[17:20:39] :     [Step 2/2] [0 sec] Starting razor engine
[17:20:39] :     [Step 2/2] [0 sec] Generating: index.html
[17:20:39] :     [Step 2/2] [0 sec] Resolving assembly: System.Web.Razor.resources, Version=2.0.0.0, Culture=en-GB, PublicKeyToken=31bf3856ad364e35
[17:20:39] :     [Step 2/2] [0 sec] Resolving assembly: System.Web.Razor.resources, Version=2.0.0.0, Culture=en-GB, PublicKeyToken=31bf3856ad364e35
[17:20:39] :     [Step 2/2] [0 sec] Resolving assembly: System.Web.Razor.resources, Version=2.0.0.0, Culture=en, PublicKeyToken=31bf3856ad364e35
[17:20:39] :     [Step 2/2] [0 sec] Resolving assembly: System.Web.Razor.resources, Version=2.0.0.0, Culture=en, PublicKeyToken=31bf3856ad364e35
[17:20:39] :     [Step 2/2] [0 sec] Generating modules...
[17:20:39] :     [Step 2/2] [0 sec] Generating module: incube-base-array2d
[17:20:39] :     [Step 2/2] [0 sec] Generating module: incube-base-lensmodule
[17:20:39] :     [Step 2/2] [0 sec] Generating module: incube-base-lensmodule-operators
[17:20:39] :     [Step 2/2] [0 sec] Generating module: incube-base-iceutils
[17:20:39] :     [Step 2/2] [0 sec] Generating module: incube-base-lensmodule-stateoperators
[17:20:40] :     [Step 2/2] [1 sec] Finished module: incube-base-lensmodule-operators
[17:20:40] :     [Step 2/2] [1 sec] Finished module: incube-base-lensmodule-stateoperators
[17:20:40] :     [Step 2/2] [1 sec] Finished module: incube-base-array2d
[17:20:40] :     [Step 2/2] [1 sec] Finished module: incube-base-lensmodule
[17:20:40] :     [Step 2/2] [1 sec] Finished module: incube-base-iceutils
[17:20:40] :     [Step 2/2] [1 sec] Generating types...
[17:20:40] :     [Step 2/2] [1 sec] Generating type: incube-base-iceutils-servicebase
[17:20:40] :     [Step 2/2] [1 sec] Generating type: incube-base-iceutils-iceboximplementationforattribute
[17:20:40] :     [Step 2/2] [1 sec] Generating type: incube-base-lens-2
[17:20:41] :     [Step 2/2] [2 sec] Finished type: incube-base-iceutils-iceboximplementationforattribute
[17:20:41] :     [Step 2/2] [2 sec] Finished type: incube-base-lens-2
[17:20:41] :     [Step 2/2] [2 sec] Finished type: incube-base-iceutils-servicebase
[17:20:41] :     [Step 2/2] [2 sec] Reading assembly: C:\BuildAgent\work\9cca5f94ac237474\results\ProView.Dsl.dll
[17:20:41] :     [Step 2/2] [2 sec] Parsing assembly
[17:20:41] :     [Step 2/2] [2 sec] Starting razor engine
[17:20:41] :     [Step 2/2] [2 sec] Generating: index.html
[17:20:41] :     [Step 2/2] [2 sec] Generating modules...
[17:20:41] :     [Step 2/2] [2 sec] Generating module: proview-dsl-syntax
[17:20:41] :     [Step 2/2] [2 sec] Generating module: proview-dsl-evaluation
[17:20:41] :     [Step 2/2] [2 sec] Generating module: proview-dsl-syntax-statistics
[17:20:42] :     [Step 2/2] [3 sec] Finished module: proview-dsl-syntax-statistics
[17:20:42] :     [Step 2/2] [3 sec] Finished module: proview-dsl-syntax
[17:20:42] :     [Step 2/2] [3 sec] Finished module: proview-dsl-evaluation
[17:20:42] :     [Step 2/2] [3 sec] Generating types...
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-evaluation-observations
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-evaluation-restrictedsymboltable
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-evaluation-statistic
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-syntax-binaryoperator
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-evaluation-symboltable
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-syntax-binarystatistictype
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-syntax-constraint
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-syntax-distribution
[17:20:42] :     [Step 2/2] [3 sec] Generating type: proview-dsl-syntax-identifier
[17:20:43] :     [Step 2/2] [4 sec] Generating type: proview-dsl-syntax-observationtype
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-syntax-observationtype
[17:20:43] :     [Step 2/2] [4 sec] Generating type: proview-dsl-syntax-randomvariableexpression
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-syntax-distribution
[17:20:43] :     [Step 2/2] [4 sec] Generating type: proview-dsl-syntax-statexproperator
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-syntax-identifier
[17:20:43] :     [Step 2/2] [4 sec] Generating type: proview-dsl-syntax-statistic
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-evaluation-statistic
[17:20:43] :     [Step 2/2] [4 sec] Generating type: proview-dsl-syntax-statisticexpression
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-syntax-constraint
[17:20:43] :     [Step 2/2] [4 sec] Generating type: proview-dsl-syntax-statistictype
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-evaluation-symboltable
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-syntax-binarystatistictype
[17:20:43] :     [Step 2/2] [4 sec] Finished type: proview-dsl-syntax-binaryoperator
[17:20:44] :     [Step 2/2] [4 sec] Finished type: proview-dsl-evaluation-restrictedsymboltable
[17:20:44] :     [Step 2/2] [4 sec] Finished type: proview-dsl-evaluation-observations
[17:20:44] :     [Step 2/2] [5 sec] Finished type: proview-dsl-syntax-statistictype
[17:20:44] :     [Step 2/2] [5 sec] Finished type: proview-dsl-syntax-randomvariableexpression
[17:20:45] :     [Step 2/2] [5 sec] Finished type: proview-dsl-syntax-statexproperator
[17:20:45] :     [Step 2/2] [5 sec] Finished type: proview-dsl-syntax-statistic
[17:20:45] :     [Step 2/2] [5 sec] Finished type: proview-dsl-syntax-statisticexpression
[17:20:45] :     [Step 2/2] [6 sec] **** warning: The type provider 'C:\BuildAgent\work\9cca5f94ac237474\results\FSharp.Data.dll' reported an error: Assembly attribute 'TypeProviderAssemblyAttribute' refers to a designer assembly 'FSharp.Data.DesignTime' which cannot be loaded or doesn't exist. Could not load file or assembly 'file:///C:\BuildAgent\work\9cca5f94ac237474\results\FSharp.Data.DesignTime.dll' or one of its dependencies. The system cannot find the file specified.
[17:20:45] :     [Step 2/2] [6 sec] **** error: Referenced assembly 'C:\BuildAgent\work\9cca5f94ac237474\results\FSharp.Data.dll' has assembly level attribute 'Microsoft.FSharp.Core.CompilerServices.TypeProviderAssemblyAttribute' but no public type provider classes were found
[17:20:45] :     [Step 2/2] [6 sec] Reading assembly: C:\BuildAgent\work\9cca5f94ac237474\results\ProView.FileReader.dll
[17:20:45] :     [Step 2/2] [6 sec] Parsing assembly
[17:20:45]W:     [Step 2/2] Running build failed.
[17:20:45]W:     [Step 2/2] Error:
[17:20:45]W:     [Step 2/2] Microsoft.FSharp.Compiler.ErrorLogger+ReportedError: Exception of type 'Microsoft.FSharp.Compiler.Tast+InternalUndefinedItemRef' was thrown.
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Compiler.ErrorLogger.ErrorLoggerExtensions.ErrorLogger.Error[b](ErrorLogger x, Exception exn) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\ErrorLogger.fs:line 329
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Compiler.Tast.EntityRef.get_Deref() in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\tast.fs:line 2549
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Compiler.SourceCodeServices.FSharpEntity.get_LogicalName() in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\vs\Typed.fs:line 91
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.ValueReader.|MeasureProd|_|(FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 180
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.ValueReader.formatTypeWithPrec(Int32 prec, FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 228
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.ValueReader.formatTypeApplication[a](String typeName, Int32 prec, Boolean prefix, FSharpList`1 args) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 211
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.ValueReader.formatTypeWithPrec(Int32 prec, FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 239
[17:20:45]W:     [Step 2/2]    at [email protected](FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 340
[17:20:45] :     [Step 2/2] ##teamcity[buildStatus status='FAILURE' text='Microsoft.FSharp.Compiler.ErrorLogger+ReportedError: Exception of type |'Microsoft.FSharp.Compiler.Tast+InternalUndefinedItemRef|' was thrown.   at Microsoft.FSharp.Compiler.ErrorLogger.ErrorLoggerExtensions.ErrorLogger.Error|[b|](ErrorLogger x, Exception exn) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\ErrorLogger.fs:line 329   at Microsoft.FSharp.Compiler.Tast.EntityRef.get_Deref() in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\tast.fs:line 2549   at Microsoft.FSharp.Compiler.SourceCodeServices.FSharpEntity.get_LogicalName() in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\vs\Typed.fs:line 91   at FSharp.MetadataFormat.ValueReader.||MeasureProd||_||(FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 180   at FSharp.MetadataFormat.ValueReader.formatTypeWithPrec(Int32 prec, FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 228   at FSharp.MetadataFormat.ValueReader.formatTypeApplication|[a|](String typeName, Int32 prec, Boolean prefix, FSharpList`1 args) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 211   at FSharp.MetadataFormat.ValueReader.formatTypeWithPrec(Int32 prec, FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 239   at [email protected](FSharpType typ) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 340   at Microsoft.FSharp.Core.OptionModule.Map|[T,TResult|](FSharpFunc`2 mapping, FSharpOption`1 option)   at FSharp.MetadataFormat.ValueReader.readMemberOrVal(ReadingContext ctx, FSharpMemberFunctionOrValue v) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 340   at [email protected](String cat, IDictionary`2 _arg1, Comment comment) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 513   at FSharp.MetadataFormat.Reader.readCommentsInto|[a|](ReadingContext ctx, String xmlDoc, FSharpFunc`2 f) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 498   at FSharp.MetadataFormat.Reader.tryReadMember(ReadingContext ctx, MemberKind kind, FSharpMemberFunctionOrValue memb) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 512   at [email protected](FSharpMemberFunctionOrValue memb) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 525   at Microsoft.FSharp.Collections.IEnumerator.choose@163.System-Collections-IEnumerator-MoveNext()   at Microsoft.FSharp.Collections.SeqModule.ToList|[T|](IEnumerable`1 source)   at [email protected](String cat, IDictionary`2 cmd, Comment comment) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 610   at FSharp.MetadataFormat.Reader.readCommentsInto|[a|](ReadingContext ctx, String xmlDoc, FSharpFunc`2 f) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 498   at FSharp.MetadataFormat.Reader.readModule(ReadingContext ctx, FSharpEntity modul) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 606   at [email protected](ReadingContext ctx, FSharpEntity modul) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 555   at Microsoft.FSharp.Collections.IEnumerator.choose@163.System-Collections-IEnumerator-MoveNext()   at Microsoft.FSharp.Collections.SeqModule.ToList|[T|](IEnumerable`1 source)   at FSharp.MetadataFormat.Reader.readModulesAndTypes(ReadingContext ctx, IEnumerable`1 entities) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 557   at FSharp.MetadataFormat.Reader.readNamespace(ReadingContext ctx, String ns, IEnumerable`1 entities) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 627   at [email protected](Tuple`2 tupledArg) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 648   at [email protected](b& )   at Microsoft.FSharp.Collections.IEnumerator.MapEnumerator`1.System-Collections-IEnumerator-MoveNext()   at Microsoft.FSharp.Collections.SeqModule.ToList|[T|](IEnumerable`1 source)   at FSharp.MetadataFormat.Reader.readAssembly(FSharpAssembly assembly, Boolean publicOnly, String xmlFile, FSharpOption`1 sourceFolderRepo) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 643   at <StartupCode$FSharp-MetadataFormat>[email protected](IEnumerable`1& next) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 765   at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1.MoveNextImpl()   at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1.System-Collections-IEnumerator-MoveNext()   at Microsoft.FSharp.Collections.SeqModule.ToList|[T|](IEnumerable`1 source)   at FSharp.MetadataFormat.MetadataFormat.Generate(FSharpList`1 dllFiles, String outDir, IEnumerable`1 layoutRoots, FSharpOption`1 parameters, FSharpOption`1 namespaceTemplate, FSharpOption`1 moduleTemplate, FSharpOption`1 typeTemplate, FSharpOption`1 xmlFile, FSharpOption`1 sourceRepo, FSharpOption`1 sourceFolder, FSharpOption`1 publicOnly, FSharpOption`1 libDirs, FSharpOption`1 otherFlags) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 753   at FSharp.MetadataFormat.MetadataFormat.Generate(String dllFile, String outDir, IEnumerable`1 layoutRoots, FSharpOption`1 parameters, FSharpOption`1 namespaceTemplate, FSharpOption`1 moduleTemplate, FSharpOption`1 typeTemplate, FSharpOption`1 xmlFile, FSharpOption`1 sourceRepo, FSharpOption`1 sourceFolder, FSharpOption`1 publicOnly, FSharpOption`1 libDirs, FSharpOption`1 otherFlags) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 672   at [email protected](Document doc) in C:\BuildAgent\work\9cca5f94ac237474\doc\MakeManual.fsx:line 103   at Microsoft.FSharp.Collections.SeqModule.Iterate|[T|](FSharpFunc`2 action, IEnumerable`1 source)   at [email protected](Document doc) in C:\BuildAgent\work\9cca5f94ac237474\doc\MakeManual.fsx:line 103   at Microsoft.FSharp.Collections.SeqModule.Iterate|[T|](FSharpFunc`2 action, IEnumerable`1 source)   at [email protected](Unit _arg7) in C:\BuildAgent\work\9cca5f94ac237474\build.fsx:line 74   at Fake.TargetHelper.runTarget@290(String targetName)']
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Core.OptionModule.Map[T,TResult](FSharpFunc`2 mapping, FSharpOption`1 option)
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.ValueReader.readMemberOrVal(ReadingContext ctx, FSharpMemberFunctionOrValue v) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 340
[17:20:45]W:     [Step 2/2]    at [email protected](String cat, IDictionary`2 _arg1, Comment comment) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 513
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.readCommentsInto[a](ReadingContext ctx, String xmlDoc, FSharpFunc`2 f) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 498
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.tryReadMember(ReadingContext ctx, MemberKind kind, FSharpMemberFunctionOrValue memb) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 512
[17:20:45]W:     [Step 2/2]    at [email protected](FSharpMemberFunctionOrValue memb) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 525
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.IEnumerator.choose@163.System-Collections-IEnumerator-MoveNext()
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.SeqModule.ToList[T](IEnumerable`1 source)
[17:20:45]W:     [Step 2/2]    at [email protected](String cat, IDictionary`2 cmd, Comment comment) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 610
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.readCommentsInto[a](ReadingContext ctx, String xmlDoc, FSharpFunc`2 f) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 498
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.readModule(ReadingContext ctx, FSharpEntity modul) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 606
[17:20:45]W:     [Step 2/2]    at [email protected](ReadingContext ctx, FSharpEntity modul) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 555
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.IEnumerator.choose@163.System-Collections-IEnumerator-MoveNext()
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.SeqModule.ToList[T](IEnumerable`1 source)
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.readModulesAndTypes(ReadingContext ctx, IEnumerable`1 entities) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 557
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.readNamespace(ReadingContext ctx, String ns, IEnumerable`1 entities) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 627
[17:20:45]W:     [Step 2/2]    at [email protected](Tuple`2 tupledArg) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 648
[17:20:45]W:     [Step 2/2]    at [email protected](b& )
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.IEnumerator.MapEnumerator`1.System-Collections-IEnumerator-MoveNext()
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.SeqModule.ToList[T](IEnumerable`1 source)
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.Reader.readAssembly(FSharpAssembly assembly, Boolean publicOnly, String xmlFile, FSharpOption`1 sourceFolderRepo) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 643
[17:20:45]W:     [Step 2/2]    at <StartupCode$FSharp-MetadataFormat>[email protected](IEnumerable`1& next) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 765
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1.MoveNextImpl()
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1.System-Collections-IEnumerator-MoveNext()
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.SeqModule.ToList[T](IEnumerable`1 source)
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.MetadataFormat.Generate(FSharpList`1 dllFiles, String outDir, IEnumerable`1 layoutRoots, FSharpOption`1 parameters, FSharpOption`1 namespaceTemplate, FSharpOption`1 moduleTemplate, FSharpOption`1 typeTemplate, FSharpOption`1 xmlFile, FSharpOption`1 sourceRepo, FSharpOption`1 sourceFolder, FSharpOption`1 publicOnly, FSharpOption`1 libDirs, FSharpOption`1 otherFlags) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 753
[17:20:45]W:     [Step 2/2]    at FSharp.MetadataFormat.MetadataFormat.Generate(String dllFile, String outDir, IEnumerable`1 layoutRoots, FSharpOption`1 parameters, FSharpOption`1 namespaceTemplate, FSharpOption`1 moduleTemplate, FSharpOption`1 typeTemplate, FSharpOption`1 xmlFile, FSharpOption`1 sourceRepo, FSharpOption`1 sourceFolder, FSharpOption`1 publicOnly, FSharpOption`1 libDirs, FSharpOption`1 otherFlags) in c:\Tomas\Public\FSharp.Formatting\src\FSharp.MetadataFormat\Main.fs:line 672
[17:20:45]W:     [Step 2/2]    at [email protected](Document doc) in C:\BuildAgent\work\9cca5f94ac237474\doc\MakeManual.fsx:line 103
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.SeqModule.Iterate[T](FSharpFunc`2 action, IEnumerable`1 source)
[17:20:45]W:     [Step 2/2]    at [email protected](Document doc) in C:\BuildAgent\work\9cca5f94ac237474\doc\MakeManual.fsx:line 103
[17:20:45]W:     [Step 2/2]    at Microsoft.FSharp.Collections.SeqModule.Iterate[T](FSharpFunc`2 action, IEnumerable`1 source)
[17:20:45]W:     [Step 2/2]    at [email protected](Unit _arg7) in C:\BuildAgent\work\9cca5f94ac237474\build.fsx:line 74
[17:20:45]W:     [Step 2/2]    at Fake.TargetHelper.runTarget@290(String targetName)

[tpetricek]

I'm closing this as it is quite old, but if this still happens with the latest version, please reopen it!

[koenmetsu]

Seeing this in 2.10.3 as well.

Repro:

git clone https://github.com/koenmetsu/Muffin.Pictures.Archiver.git
git checkout f3f9c11014248334eafa9d3aa2508aa64e29b9ce
build.cmd

Quite possibly related to #325

[oscarvarto]

I think I am hitting this error in 2017, for version 2.14.4. See also fsprojects/ProjectScaffold#309