Source: newtonsoft-json
Version: 4.5r6-1
Severity: serious
Tags: jessie sid
User: [email protected]
Usertags: qa-ftbfs-20130620 qa-ftbfs
Justification: FTBFS on amd64

Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part:
> make[1]: Entering directory `/«PKGBUILDDIR»'
> xbuild Source/Src/Newtonsoft.Json/Newtonsoft.Json.csproj      \
>               /property:SignAssembly=true                             \
>               /property:AssemblyOriginatorKeyFile=Dynamic.snk         \
>               /property:DefineConstants=SIGNED
> XBuild Engine Version 3.0.6.0
> Mono, Version 3.0.6.0
> Copyright (C) Marek Sieradzki 2005-2008, Novell 2008-2011.
> 
> Build started 06/21/2013 05:29:08.
> __________________________________________________
> Project "/«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/Newtonsoft.Json.csproj" 
> (default target(s)):
>       Target PrepareForBuild:
>               Configuration: Debug Platform: AnyCPU
>               Created directory "bin/Debug/Net40/"
>               Created directory "obj/Debug/"
>       Target GetReferenceAssemblyPaths:
> /usr/lib/mono/4.0/Microsoft.Common.targets:  warning : Unable to find 
> framework corresponding to the target framework moniker 
> '.NETFramework,Version=v4.0,Profile=Client'. Framework assembly references 
> will be resolved from the GAC, which might not be the intended behavior.
>       Target CopyNonResxEmbeddedResources:
>               Copying file from 
> '/«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/Dynamic.snk' to 
> '/«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/obj/Debug/Newtonsoft.Json.Dynamic.snk'
>       Target GenerateSatelliteAssemblies:
>       No input files were specified for target GenerateSatelliteAssemblies, 
> skipping.
>       Target CoreCompile:
>               Tool /usr/bin/dmcs execution started with arguments: /noconfig 
> /debug:full /debug+ /keyfile:Dynamic.snk /optimize- 
> /out:obj/Debug/Newtonsoft.Json.dll 
> /resource:obj/Debug/Newtonsoft.Json.Dynamic.snk Bson/BsonBinaryType.cs 
> Bson/BsonBinaryWriter.cs Bson/BsonReader.cs Bson/BsonToken.cs 
> Bson/BsonType.cs Bson/BsonWriter.cs Bson/BsonObjectId.cs 
> Converters/BinaryConverter.cs Converters/DataSetConverter.cs 
> Converters/DataTableConverter.cs Converters/CustomCreationConverter.cs 
> Converters/DateTimeConverterBase.cs Converters/EntityKeyMemberConverter.cs 
> Converters/ExpandoObjectConverter.cs Converters/KeyValuePairConverter.cs 
> Converters/BsonObjectIdConverter.cs Converters/RegexConverter.cs 
> Converters/StringEnumConverter.cs ConstructorHandling.cs 
> Converters/VersionConverter.cs JsonDictionaryAttribute.cs JsonException.cs 
> DateFormatHandling.cs DateParseHandling.cs DateTimeZoneHandling.cs 
> Formatting.cs JsonConstructorAttribute.cs JsonPosition.cs 
> Linq/JPropertyKeyedCollection.cs Serialization/JsonContainerContract.cs 
> Utilities/DynamicProxy.cs Linq/JPath.cs Linq/JRaw.cs Required.cs 
> Serialization/JsonDynamicContract.cs Serialization/JsonFormatterConverter.cs 
> Serialization/JsonISerializableContract.cs Serialization/JsonLinqContract.cs 
> Serialization/JsonPrimitiveContract.cs Serialization/DynamicValueProvider.cs 
> Serialization/ErrorEventArgs.cs Linq/JPropertyDescriptor.cs 
> Serialization/DefaultReferenceResolver.cs PreserveReferencesHandling.cs 
> IJsonLineInfo.cs JsonArrayAttribute.cs JsonContainerAttribute.cs 
> DefaultValueHandling.cs JsonConverterAttribute.cs JsonObjectAttribute.cs 
> JsonSerializerSettings.cs JsonValidatingReader.cs Linq/IJEnumerable.cs 
> Linq/JTokenEqualityComparer.cs MemberSerialization.cs 
> ObjectCreationHandling.cs Converters/IsoDateTimeConverter.cs 
> Converters/JavaScriptDateTimeConverter.cs Converters/XmlNodeConverter.cs 
> JsonTextReader.cs JsonPropertyAttribute.cs JsonIgnoreAttribute.cs 
> JsonTextWriter.cs JsonWriterException.cs JsonReaderException.cs 
> JsonConverter.cs JsonConverterCollection.cs JsonReader.cs JsonConvert.cs 
> JsonSerializationException.cs JsonSerializer.cs Linq/Extensions.cs 
> Linq/JConstructor.cs Linq/JContainer.cs Linq/JEnumerable.cs Linq/JObject.cs 
> Linq/JArray.cs Linq/JTokenReader.cs Linq/JTokenWriter.cs Linq/JToken.cs 
> Linq/JProperty.cs Linq/JTokenType.cs Linq/JValue.cs Schema/Extensions.cs 
> Schema/JsonSchemaException.cs Schema/JsonSchemaModel.cs 
> Schema/JsonSchemaModelBuilder.cs Schema/JsonSchemaNodeCollection.cs 
> Schema/JsonSchemaNode.cs Schema/JsonSchemaResolver.cs 
> Schema/JsonSchemaWriter.cs Schema/UndefinedSchemaIdHandling.cs 
> Schema/ValidationEventArgs.cs Schema/ValidationEventHandler.cs 
> Serialization/CamelCasePropertyNamesContractResolver.cs 
> Serialization/DefaultContractResolver.cs 
> Serialization/DefaultSerializationBinder.cs Serialization/ErrorContext.cs 
> Serialization/IContractResolver.cs Serialization/IValueProvider.cs 
> Serialization/JsonArrayContract.cs Serialization/JsonContract.cs 
> Serialization/JsonDictionaryContract.cs Serialization/JsonProperty.cs 
> Serialization/JsonPropertyCollection.cs MissingMemberHandling.cs 
> NullValueHandling.cs ReferenceLoopHandling.cs Schema/JsonSchema.cs 
> Schema/JsonSchemaBuilder.cs Schema/JsonSchemaConstants.cs 
> Schema/JsonSchemaGenerator.cs Serialization/IReferenceResolver.cs 
> Schema/JsonSchemaType.cs Serialization/JsonObjectContract.cs 
> Serialization/JsonSerializerInternalBase.cs 
> Serialization/JsonSerializerInternalReader.cs 
> Serialization/JsonSerializerInternalWriter.cs 
> Serialization/JsonSerializerProxy.cs Serialization/JsonStringContract.cs 
> Serialization/JsonTypeReflector.cs Serialization/CachedAttributeGetter.cs 
> Serialization/LateBoundMetadataTypeAttribute.cs 
> Serialization/ReflectionValueProvider.cs Serialization/OnErrorAttribute.cs 
> Utilities/Base64Encoder.cs Utilities/DynamicProxyMetaObject.cs 
> Utilities/DynamicUtils.cs Utilities/DynamicWrapper.cs 
> Utilities/DynamicReflectionDelegateFactory.cs 
> Serialization/ObjectConstructor.cs Utilities/ILGeneratorExtensions.cs 
> Utilities/ReflectionDelegateFactory.cs 
> Utilities/LateBoundReflectionDelegateFactory.cs Utilities/MethodCall.cs 
> Utilities/StringReference.cs Utilities/ThreadSafeStore.cs TypeNameHandling.cs 
> Utilities/BidirectionalDictionary.cs Utilities/ConvertUtils.cs 
> Utilities/CollectionWrapper.cs Utilities/DateTimeUtils.cs 
> Utilities/DictionaryWrapper.cs Utilities/EnumUtils.cs Utilities/EnumValue.cs 
> Utilities/EnumValues.cs Utilities/JavaScriptUtils.cs JsonToken.cs 
> JsonWriter.cs Properties/AssemblyInfo.cs Utilities/StringBuffer.cs 
> Utilities/CollectionUtils.cs Utilities/ListWrapper.cs Utilities/MathUtils.cs 
> Utilities/MiscellaneousUtils.cs Utilities/ReflectionUtils.cs 
> Utilities/StringUtils.cs Utilities/TypeExtensions.cs 
> Utilities/ValidationUtils.cs WriteState.cs /target:library /define:SIGNED 
> /doc:bin/Debug/Net40/Newtonsoft.Json.xml 
> /reference:/usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll 
> /reference:/usr/lib/mono/gac/System.Data/4.0.0.0__b77a5c561934e089/System.Data.dll
>  
> /reference:/usr/lib/mono/gac/System.Runtime.Serialization/4.0.0.0__b77a5c561934e089/System.Runtime.Serialization.dll
>  
> /reference:/usr/lib/mono/gac/System.Xml/4.0.0.0__b77a5c561934e089/System.Xml.dll
>  
> /reference:/usr/lib/mono/gac/System.Xml.Linq/4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
>  
> /reference:/usr/lib/mono/gac/System.Core/4.0.0.0__b77a5c561934e089/System.Core.dll
>  /warn:4
> Linq/Extensions.cs(49,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Ancestors<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(70,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Descendants<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(90,43): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Properties(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JObject>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(103,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>, 
> object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(113,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(125,34): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values<U>(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>, 
> object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(136,34): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values<U>(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(147,21): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Value<U>(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(159,21): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Value<T,U>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(171,36): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values<T,U>(this 
> System.Collections.Generic.IEnumerable<T>, object)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
> Linq/Extensions.cs(218,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Children<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(230,34): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Children<T,U>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(237,36): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Convert<T,U>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(247,23): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Convert<T,U>(this T)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
> Linq/Extensions.cs(290,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.AsJEnumerable(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Linq/Extensions.cs(301,35): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.AsJEnumerable<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Schema/Extensions.cs(45,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.IsValid(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Schema/Extensions.cs(61,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.IsValid(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema, out 
> System.Collections.Generic.IList<string>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Schema/Extensions.cs(76,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.Validate(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Schema/Extensions.cs(87,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.Validate(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema, 
> Newtonsoft.Json.Schema.ValidationEventHandler)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/DynamicUtils.cs(124,24): error CS1110: 
> `Newtonsoft.Json.Utilities.DynamicUtils.TryGetMember(this 
> System.Dynamic.IDynamicMetaObjectProvider, string, out object)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
> Utilities/DynamicUtils.cs(146,24): error CS1110: 
> `Newtonsoft.Json.Utilities.DynamicUtils.TrySetMember(this 
> System.Dynamic.IDynamicMetaObjectProvider, string, object)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
> Utilities/DynamicUtils.cs(159,39): error CS1110: 
> `Newtonsoft.Json.Utilities.DynamicUtils.GetDynamicMemberNames(this 
> System.Dynamic.IDynamicMetaObjectProvider)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ILGeneratorExtensions.cs(35,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.PushInstance(this 
> System.Reflection.Emit.ILGenerator, System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ILGeneratorExtensions.cs(44,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.BoxIfNeeded(this 
> System.Reflection.Emit.ILGenerator, System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ILGeneratorExtensions.cs(52,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.UnboxIfNeeded(this 
> System.Reflection.Emit.ILGenerator, System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ILGeneratorExtensions.cs(60,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.CallMethod(this 
> System.Reflection.Emit.ILGenerator, System.Reflection.MethodInfo)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
> Utilities/ILGeneratorExtensions.cs(68,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.Return(this 
> System.Reflection.Emit.ILGenerator)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ConvertUtils.cs(128,28): error CS1110: 
> `Newtonsoft.Json.Utilities.ConvertUtils.GetTypeCode(this 
> System.IConvertible)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/DateTimeUtils.cs(34,26): error CS1110: 
> `Newtonsoft.Json.Utilities.DateTimeUtils.GetUtcOffsetText(this 
> System.DateTime)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/DateTimeUtils.cs(41,28): error CS1110: 
> `Newtonsoft.Json.Utilities.DateTimeUtils.GetUtcOffset(this System.DateTime)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(44,34): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.CastValid<T>(this 
> System.Collections.IEnumerable)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(72,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddRange<T>(this 
> System.Collections.Generic.IList<T>, 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(86,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddRange(this 
> System.Collections.IList, System.Collections.IEnumerable)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(254,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddDistinct<T>(this 
> System.Collections.Generic.IList<T>, T)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(259,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddDistinct<T>(this 
> System.Collections.Generic.IList<T>, T, 
> System.Collections.Generic.IEqualityComparer<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(269,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.ContainsValue<TSource>(this 
> System.Collections.Generic.IEnumerable<TSource>, TSource, 
> System.Collections.Generic.IEqualityComparer<TSource>)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(286,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddRangeDistinct<T>(this 
> System.Collections.Generic.IList<T>, 
> System.Collections.Generic.IEnumerable<T>, 
> System.Collections.Generic.IEqualityComparer<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(298,23): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.IndexOf<T>(this 
> System.Collections.Generic.IEnumerable<T>, System.Func<T,bool>)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
> Utilities/CollectionUtils.cs(320,23): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.IndexOf<TSource>(this 
> System.Collections.Generic.IEnumerable<TSource>, TSource, 
> System.Collections.Generic.IEqualityComparer<TSource>)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
> Utilities/ReflectionUtils.cs(136,44): error CS1110: 
> `Newtonsoft.Json.Utilities.ReflectionUtils.GetCustomAttributeProvider(this 
> object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ReflectionUtils.cs(145,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ReflectionUtils.IsVirtual(this 
> System.Reflection.PropertyInfo)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/ReflectionUtils.cs(959,32): error CS1110: 
> `Newtonsoft.Json.Utilities.ReflectionUtils.RemoveFlag(this 
> System.Reflection.BindingFlags, System.Reflection.BindingFlags)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
> Utilities/StringUtils.cs(48,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/StringUtils.cs(53,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, object, object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/StringUtils.cs(58,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, object, object, object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/StringUtils.cs(63,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, params object[])': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/StringUtils.cs(130,27): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.ForgivingCaseSensitiveFind<TSource>(this
>  System.Collections.Generic.IEnumerable<TSource>, 
> System.Func<TSource,string>, string)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(81,31): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.MemberType(this 
> System.Reflection.MemberInfo)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(100,26): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.Module(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(110,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.ContainsGenericParameters(this 
> System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(119,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsInterface(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(128,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsGenericType(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(137,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsGenericTypeDefinition(this 
> System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(146,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.BaseType(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(155,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsEnum(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(164,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsClass(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(173,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsSealed(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(492,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsAbstract(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(501,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsVisible(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(510,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsValueType(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(519,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.AssignableToTypeName(this 
> System.Type, string, out System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(547,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.AssignableToTypeName(this 
> System.Type, string)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(553,30): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.GetGenericMethod(this System.Type, 
> string, params System.Type[])': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(566,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.HasParameters(this 
> System.Reflection.MethodInfo, params System.Type[])': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(580,37): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.GetAllInterfaces(this 
> System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> Utilities/TypeExtensions.cs(592,43): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.GetAllMethods(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Task "Csc" execution -- FAILED
>       Done building target "CoreCompile" in project 
> "/«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/Newtonsoft.Json.csproj".-- FAILED
> Done building project 
> "/«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/Newtonsoft.Json.csproj".-- FAILED
> 
> Build FAILED.
> 
> Warnings:
> 
> /«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/Newtonsoft.Json.csproj (default 
> targets) ->
> /usr/lib/mono/4.0/Microsoft.Common.targets (GetReferenceAssemblyPaths target) 
> ->
> 
>       /usr/lib/mono/4.0/Microsoft.Common.targets:  warning : Unable to find 
> framework corresponding to the target framework moniker 
> '.NETFramework,Version=v4.0,Profile=Client'. Framework assembly references 
> will be resolved from the GAC, which might not be the intended behavior.
> 
> Errors:
> 
> /«PKGBUILDDIR»/Source/Src/Newtonsoft.Json/Newtonsoft.Json.csproj (default 
> targets) ->
> /usr/lib/mono/4.0/Microsoft.CSharp.targets (CoreCompile target) ->
> 
>       Linq/Extensions.cs(49,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Ancestors<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(70,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Descendants<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(90,43): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Properties(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JObject>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(103,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>, 
> object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(113,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(125,34): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values<U>(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>, 
> object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(136,34): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values<U>(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(147,21): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Value<U>(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(159,21): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Value<T,U>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(171,36): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Values<T,U>(this 
> System.Collections.Generic.IEnumerable<T>, object)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
>       Linq/Extensions.cs(218,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Children<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(230,34): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Children<T,U>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(237,36): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Convert<T,U>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(247,23): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.Convert<T,U>(this T)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
>       Linq/Extensions.cs(290,40): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.AsJEnumerable(this 
> System.Collections.Generic.IEnumerable<Newtonsoft.Json.Linq.JToken>)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Linq/Extensions.cs(301,35): error CS1110: 
> `Newtonsoft.Json.Linq.Extensions.AsJEnumerable<T>(this 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Schema/Extensions.cs(45,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.IsValid(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Schema/Extensions.cs(61,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.IsValid(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema, out 
> System.Collections.Generic.IList<string>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Schema/Extensions.cs(76,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.Validate(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Schema/Extensions.cs(87,24): error CS1110: 
> `Newtonsoft.Json.Schema.Extensions.Validate(this Newtonsoft.Json.Linq.JToken, 
> Newtonsoft.Json.Schema.JsonSchema, 
> Newtonsoft.Json.Schema.ValidationEventHandler)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/DynamicUtils.cs(124,24): error CS1110: 
> `Newtonsoft.Json.Utilities.DynamicUtils.TryGetMember(this 
> System.Dynamic.IDynamicMetaObjectProvider, string, out object)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
>       Utilities/DynamicUtils.cs(146,24): error CS1110: 
> `Newtonsoft.Json.Utilities.DynamicUtils.TrySetMember(this 
> System.Dynamic.IDynamicMetaObjectProvider, string, object)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
>       Utilities/DynamicUtils.cs(159,39): error CS1110: 
> `Newtonsoft.Json.Utilities.DynamicUtils.GetDynamicMemberNames(this 
> System.Dynamic.IDynamicMetaObjectProvider)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ILGeneratorExtensions.cs(35,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.PushInstance(this 
> System.Reflection.Emit.ILGenerator, System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ILGeneratorExtensions.cs(44,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.BoxIfNeeded(this 
> System.Reflection.Emit.ILGenerator, System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ILGeneratorExtensions.cs(52,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.UnboxIfNeeded(this 
> System.Reflection.Emit.ILGenerator, System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ILGeneratorExtensions.cs(60,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.CallMethod(this 
> System.Reflection.Emit.ILGenerator, System.Reflection.MethodInfo)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
>       Utilities/ILGeneratorExtensions.cs(68,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ILGeneratorExtensions.Return(this 
> System.Reflection.Emit.ILGenerator)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ConvertUtils.cs(128,28): error CS1110: 
> `Newtonsoft.Json.Utilities.ConvertUtils.GetTypeCode(this 
> System.IConvertible)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/DateTimeUtils.cs(34,26): error CS1110: 
> `Newtonsoft.Json.Utilities.DateTimeUtils.GetUtcOffsetText(this 
> System.DateTime)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/DateTimeUtils.cs(41,28): error CS1110: 
> `Newtonsoft.Json.Utilities.DateTimeUtils.GetUtcOffset(this System.DateTime)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(44,34): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.CastValid<T>(this 
> System.Collections.IEnumerable)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(72,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddRange<T>(this 
> System.Collections.Generic.IList<T>, 
> System.Collections.Generic.IEnumerable<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(86,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddRange(this 
> System.Collections.IList, System.Collections.IEnumerable)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(254,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddDistinct<T>(this 
> System.Collections.Generic.IList<T>, T)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(259,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddDistinct<T>(this 
> System.Collections.Generic.IList<T>, T, 
> System.Collections.Generic.IEqualityComparer<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(269,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.ContainsValue<TSource>(this 
> System.Collections.Generic.IEnumerable<TSource>, TSource, 
> System.Collections.Generic.IEqualityComparer<TSource>)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(286,24): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.AddRangeDistinct<T>(this 
> System.Collections.Generic.IList<T>, 
> System.Collections.Generic.IEnumerable<T>, 
> System.Collections.Generic.IEqualityComparer<T>)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(298,23): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.IndexOf<T>(this 
> System.Collections.Generic.IEnumerable<T>, System.Func<T,bool>)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
>       Utilities/CollectionUtils.cs(320,23): error CS1110: 
> `Newtonsoft.Json.Utilities.CollectionUtils.IndexOf<TSource>(this 
> System.Collections.Generic.IEnumerable<TSource>, TSource, 
> System.Collections.Generic.IEqualityComparer<TSource>)': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
>       Utilities/ReflectionUtils.cs(136,44): error CS1110: 
> `Newtonsoft.Json.Utilities.ReflectionUtils.GetCustomAttributeProvider(this 
> object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ReflectionUtils.cs(145,24): error CS1110: 
> `Newtonsoft.Json.Utilities.ReflectionUtils.IsVirtual(this 
> System.Reflection.PropertyInfo)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/ReflectionUtils.cs(959,32): error CS1110: 
> `Newtonsoft.Json.Utilities.ReflectionUtils.RemoveFlag(this 
> System.Reflection.BindingFlags, System.Reflection.BindingFlags)': Extension 
> methods require `System.Runtime.CompilerServices.ExtensionAttribute' type to 
> be available. Are you missing an assembly reference?
>       Utilities/StringUtils.cs(48,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/StringUtils.cs(53,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, object, object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/StringUtils.cs(58,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, object, object, object)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/StringUtils.cs(63,26): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.FormatWith(this string, 
> System.IFormatProvider, params object[])': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/StringUtils.cs(130,27): error CS1110: 
> `Newtonsoft.Json.Utilities.StringUtils.ForgivingCaseSensitiveFind<TSource>(this
>  System.Collections.Generic.IEnumerable<TSource>, 
> System.Func<TSource,string>, string)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(81,31): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.MemberType(this 
> System.Reflection.MemberInfo)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(100,26): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.Module(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(110,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.ContainsGenericParameters(this 
> System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(119,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsInterface(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(128,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsGenericType(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(137,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsGenericTypeDefinition(this 
> System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(146,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.BaseType(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(155,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsEnum(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(164,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsClass(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(173,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsSealed(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(492,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsAbstract(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(501,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsVisible(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(510,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.IsValueType(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(519,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.AssignableToTypeName(this 
> System.Type, string, out System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(547,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.AssignableToTypeName(this 
> System.Type, string)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(553,30): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.GetGenericMethod(this System.Type, 
> string, params System.Type[])': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(566,24): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.HasParameters(this 
> System.Reflection.MethodInfo, params System.Type[])': Extension methods 
> require `System.Runtime.CompilerServices.ExtensionAttribute' type to be 
> available. Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(580,37): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.GetAllInterfaces(this 
> System.Type)': Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
>       Utilities/TypeExtensions.cs(592,43): error CS1110: 
> `Newtonsoft.Json.Utilities.TypeExtensions.GetAllMethods(this System.Type)': 
> Extension methods require 
> `System.Runtime.CompilerServices.ExtensionAttribute' type to be available. 
> Are you missing an assembly reference?
> 
>        1 Warning(s)
>        67 Error(s)
> 
> Time Elapsed 00:00:02.8016610
> make[1]: *** [override_dh_auto_build] Error 1

The full build log is available from:
   
http://aws-logs.debian.net/ftbfs-logs/2013/06/20/newtonsoft-json_4.5r6-1_unstable.log

A list of current common problems and possible solutions is available at 
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.


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