LinkAssemblies task fails unexpectedly

gistfile1.txt

1>------ Rebuild All started: Project: RestSharp.MonoDroid, Configuration: Release Any CPU ------
1>  RestSharp.MonoDroid -> U:\tom\work\reportgraffiti.root\3rdparty\restsharp-RestSharp-054adce\RestSharp.MonoDroid\bin\Release\RestSharp.MonoDroid.dll
2>------ Rebuild All started: Project: ReportGraffiti, Configuration: Release Any CPU ------
2>U:\tom\work\reportgraffiti.root\Android\ReportGraffiti\SubmitPictureToWebsite.cs(26,50,26,63): warning CS0649: Field 'Net.Opgenorth.ReportGraffiti.SubmitPictureToWebsite._addToGallery' is never assigned to, and will always have its default value null
2>  ReportGraffiti -> U:\tom\work\reportgraffiti.root\Android\ReportGraffiti\bin\Release\ReportGraffiti.dll
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018: The "LinkAssemblies" task failed unexpectedly.
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018: System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Collections.Generic.Collection`1.get_Item(Int32 index)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.Mdb.MdbReader.ReadLocalVariables(MethodEntry entry, MethodBody body, Scope[] scopes)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.Mdb.MdbReader.Read(MethodBody body, InstructionMapper mapper)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.Cil.CodeReader.ReadMethodBody()
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.Cil.CodeReader.ReadMethodBody(MethodDefinition method)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.MethodDefinition.<get_Body>b__2(MethodDefinition method, MetadataReader reader)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.ModuleDefinition.Read[TItem,TRet](TItem item, Func`3 read)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Cecil.MethodDefinition.get_Body()
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Linker.Steps.MarkStep.ProcessQueue()
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Linker.Steps.MarkStep.Process()
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Mono.Linker.Pipeline.Process(LinkContext context)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Xamarin.Android.Tasks.LinkAssemblies.Execute()
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
2>C:\Program Files (x86)\MSBuild\Novell\Novell.MonoDroid.Common.targets(693,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext()
========== Rebuild All: 1 succeeded, 1 failed, 0 skipped ==========