Your message dated Sun, 13 Oct 2013 22:06:36 +0200
with message-id <10392727.1ak0Iz4SoX@sephirot>
and subject line Builds ok
has caused the Debian Bug report #713224,
regarding newtonsoft-json: FTBFS:       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?
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)


-- 
713224: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=713224
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
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.

--- End Message ---
--- Begin Message ---
Now builds ok, closing it.

David

--- End Message ---

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