Using JSON.NET in EFCore.Proxies.Tests targeting net461 can fail

[ajcvickers]

Using JSON.NET in EFCore.Proxies.Tests results in error on some machines when targeting net461 and running full build from the command line:

C:\aspnet\EntityFrameworkCore>build
Using KoreBuild 2.2.0-preview1-20180911.1
Adding C:\Users\avickers\.dotnet\x64 to PATH
.NET Core SDK 2.1.400 is already installed. Skipping installation.
>>> dotnet.exe msbuild @C:\aspnet\EntityFrameworkCore\artifacts\logs\msbuild.rsp @C:\aspnet\EntityFrameworkCore\artifacts\logs\msbuild.logger.rsp
Microsoft (R) Build Engine version 15.8.166+gd4e8d81a88 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

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  ef -> C:\aspnet\EntityFrameworkCore\src\ef\bin\Debug\net461\ef.exe
  ef -> C:\aspnet\EntityFrameworkCore\src\ef\bin\Debug\netcoreapp2.0\ef.dll
  ef -> C:\aspnet\EntityFrameworkCore\src\ef\bin\x86\Debug\net461\ef.exe
  EFCore.Abstractions -> C:\aspnet\EntityFrameworkCore\src\EFCore.Abstractions\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Abstractions.dll
  EFCore.Analyzers -> C:\aspnet\EntityFrameworkCore\src\EFCore.Analyzers\bin\Debug\netstandard1.3\Microsoft.EntityFrameworkCore.Analyzers.dll
  dotnet-ef -> C:\aspnet\EntityFrameworkCore\src\dotnet-ef\bin\Debug\netcoreapp2.2\dotnet-ef.dll
  EFCore -> C:\aspnet\EntityFrameworkCore\src\EFCore\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.dll
  EFCore.Proxies -> C:\aspnet\EntityFrameworkCore\src\EFCore.Proxies\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Proxies.dll
  dotnet-ef.Tests -> C:\aspnet\EntityFrameworkCore\test\dotnet-ef.Tests\bin\Debug\netcoreapp2.2\dotnet-ef.Tests.dll
  EFCore.Relational -> C:\aspnet\EntityFrameworkCore\src\EFCore.Relational\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Relational.dll
  OracleProvider -> C:\aspnet\EntityFrameworkCore\samples\OracleProvider\src\OracleProvider\bin\Debug\net461\Microsoft.EntityFrameworkCore.Oracle.dll
  EFCore.SqlServer -> C:\aspnet\EntityFrameworkCore\src\EFCore.SqlServer\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.SqlServer.dll
  EFCore.Analyzers.Test -> C:\aspnet\EntityFrameworkCore\test\EFCore.Analyzers.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Analyzers.Tests.dll
  EFCore.SqlServer.NTS -> C:\aspnet\EntityFrameworkCore\src\EFCore.SqlServer.NTS\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuite.dll
  EFCore.Cosmos.Sql -> C:\aspnet\EntityFrameworkCore\src\EFCore.Cosmos.Sql\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Cosmos.Sql.dll
  EFCore.InMemory -> C:\aspnet\EntityFrameworkCore\src\EFCore.InMemory\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.InMemory.dll
  EFCore.Specification.Tests -> C:\aspnet\EntityFrameworkCore\src\EFCore.Specification.Tests\bin\Debug\netcoreapp2.2\Microsoft.EntityFrameworkCore.Specification.Tests.dll
  EFCore.Sqlite.Core -> C:\aspnet\EntityFrameworkCore\src\EFCore.Sqlite.Core\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Sqlite.dll
  EFCore.Design -> C:\aspnet\EntityFrameworkCore\src\EFCore.Design\bin\Debug\net461\Microsoft.EntityFrameworkCore.Design.dll
  EFCore.Design -> C:\aspnet\EntityFrameworkCore\src\EFCore.Design\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Design.dll
  EFCore.Relational.Specification.Tests -> C:\aspnet\EntityFrameworkCore\src\EFCore.Relational.Specification.Tests\bin\Debug\netcoreapp2.2\Microsoft.EntityFrameworkCore.Relational.Specification.Tests.dll
  EFCore.Sqlite.NTS -> C:\aspnet\EntityFrameworkCore\src\EFCore.Sqlite.NTS\bin\Debug\netstandard2.0\Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuite.dll
  EFCore.Specification.Tests -> C:\aspnet\EntityFrameworkCore\src\EFCore.Specification.Tests\bin\Debug\netcoreapp2.0\Microsoft.EntityFrameworkCore.Specification.Tests.dll
  EFCore.Specification.Tests -> C:\aspnet\EntityFrameworkCore\src\EFCore.Specification.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Specification.Tests.dll
  EFCore.Relational.Specification.Tests -> C:\aspnet\EntityFrameworkCore\src\EFCore.Relational.Specification.Tests\bin\Debug\netcoreapp2.0\Microsoft.EntityFrameworkCore.Relational.Specification.Tests.dll
  ef.Tests -> C:\aspnet\EntityFrameworkCore\test\ef.Tests\bin\Debug\net461\ef.Tests.dll
  EFCore.InMemory.FunctionalTests -> C:\aspnet\EntityFrameworkCore\test\EFCore.InMemory.FunctionalTests\bin\Debug\net461\Microsoft.EntityFrameworkCore.InMemory.FunctionalTests.dll
  EFCore.Relational.Specification.Tests -> C:\aspnet\EntityFrameworkCore\src\EFCore.Relational.Specification.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Relational.Specification.Tests.dll
  EFCore.Cosmos.Sql.FunctionalTests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Cosmos.Sql.FunctionalTests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Cosmos.Sql.FunctionalTests.dll
  EFCore.SqlServer.FunctionalTests -> C:\aspnet\EntityFrameworkCore\test\EFCore.SqlServer.FunctionalTests\bin\Debug\net461\Microsoft.EntityFrameworkCore.SqlServer.FunctionalTests.dll
  EFCore.Sqlite.FunctionalTests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Sqlite.FunctionalTests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Sqlite.FunctionalTests.dll
  OracleProvider.FunctionalTests -> C:\aspnet\EntityFrameworkCore\samples\OracleProvider\test\OracleProvider.FunctionalTests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Oracle.FunctionalTests.dll
  EFCore.CrossStore.FunctionalTests -> C:\aspnet\EntityFrameworkCore\test\EFCore.CrossStore.FunctionalTests\bin\Debug\net461\Microsoft.EntityFrameworkCore.CrossStore.FunctionalTests.dll
  EFCore.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Tests.dll
  EFCore.InMemory.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.InMemory.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.InMemory.Tests.dll
  EFCore.Proxies.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Proxies.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Proxies.Tests.dll
  EFCore.Relational.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Relational.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Relational.Tests.dll
  EFCore.Cosmos.Sql.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Cosmos.Sql.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Cosmos.Sql.Tests.dll
  EFCore.Sqlite.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Sqlite.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Sqlite.Tests.dll
  EFCore.Design.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.Design.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.Design.Tests.dll
  EFCore.SqlServer.Tests -> C:\aspnet\EntityFrameworkCore\test\EFCore.SqlServer.Tests\bin\Debug\net461\Microsoft.EntityFrameworkCore.SqlServer.Tests.dll
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Abstractions.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Abstractions.2.2.0-preview3-t000.symbols.nupkg'.
  EFCore.Analyzers -> C:\aspnet\EntityFrameworkCore\src\EFCore.Analyzers\bin\Debug\netstandard1.3\Microsoft.EntityFrameworkCore.Analyzers.dll
  dotnet-ef -> C:\aspnet\EntityFrameworkCore\src\dotnet-ef\bin\Debug\netcoreapp2.2\publish\
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Analyzers.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Analyzers.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Cosmos.Sql.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Cosmos.Sql.2.2.0-preview3-t000.symbols.nupkg'.
  ef -> C:\aspnet\EntityFrameworkCore\src\ef\bin\Debug\netcoreapp2.0\ef.dll
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Proxies.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Proxies.2.2.0-preview3-t000.symbols.nupkg'.
  dotnet-ef -> C:\aspnet\EntityFrameworkCore\src\dotnet-ef\bin\Debug\netcoreapp2.2\dotnet-ef.dll
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\dotnet-ef.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\dotnet-ef.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.InMemory.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.InMemory.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Specification.Tests.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Specification.Tests.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Design.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Design.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuite.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuite.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Relational.Specification.Tests.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Relational.Specification.Tests.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuite.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuite.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Sqlite.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Relational.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Sqlite.Core.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Sqlite.Core.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Relational.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Tools.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.Tools.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.SqlServer.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.SqlServer.2.2.0-preview3-t000.symbols.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.2.2.0-preview3-t000.nupkg'.
  Successfully created package 'C:\aspnet\EntityFrameworkCore\artifacts\build\Microsoft.EntityFrameworkCore.2.2.0-preview3-t000.symbols.nupkg'.

  Test plan:
    - UnitTests/netcoreapp2.2
      - dotnet-ef.Tests
    - UnitTests/net461
      - ef.Tests
      - Microsoft.EntityFrameworkCore.Analyzers.Tests
      - Microsoft.EntityFrameworkCore.Cosmos.Sql.Tests
      - Microsoft.EntityFrameworkCore.Design.Tests
      - Microsoft.EntityFrameworkCore.InMemory.Tests
      - Microsoft.EntityFrameworkCore.Proxies.Tests
      - Microsoft.EntityFrameworkCore.Relational.Tests
      - Microsoft.EntityFrameworkCore.Sqlite.Tests
      - Microsoft.EntityFrameworkCore.SqlServer.Tests
      - Microsoft.EntityFrameworkCore.Tests
      - Microsoft.EntityFrameworkCore.InMemory.FunctionalTests
      - Microsoft.EntityFrameworkCore.Sqlite.FunctionalTests
    - Cosmos.Sql.FunctionalTests/net461
      - Microsoft.EntityFrameworkCore.Cosmos.Sql.FunctionalTests
    - CrossStore.FunctionalTests/net461
      - Microsoft.EntityFrameworkCore.CrossStore.FunctionalTests
    - SqlServer.FunctionalTests/net461
      - Microsoft.EntityFrameworkCore.SqlServer.FunctionalTests

  Starting test group: UnitTests/netcoreapp2.2
  Microsoft (R) Test Execution Command Line Tool Version 15.8.0
  Copyright (c) Microsoft Corporation.  All rights reserved.

  Starting test execution, please wait...

  Total tests: 3. Passed: 3. Failed: 0. Skipped: 0.
  Test Run Successful.
  Test execution time: 2.3212 Seconds

  Starting test group: UnitTests/net461
  Microsoft (R) Test Execution Command Line Tool Version 15.8.0
  Copyright (c) Microsoft Corporation.  All rights reserved.

  Starting test execution, please wait...
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  Entity Framework Core 2.2.0-preview3-t000 initialized 'SimpleContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
  [xUnit.net 00:00:05.21]     Microsoft.EntityFrameworkCore.LazyLoadingProxyTests.Serialization_is_disabled_for_ILazyLoader_property [FAIL]
  Failed   Microsoft.EntityFrameworkCore.LazyLoadingProxyTests.Serialization_is_disabled_for_ILazyLoader_property
  Error Message:
   System.IO.FileNotFoundException : Could not load file or assembly 'Microsoft.EntityFrameworkCore.Proxies.Tests, Version=2.2.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' or one of its dependencies. The system cannot find the file specified.
  Stack Trace:
     at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs)
     at System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs)
     at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent)
     at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeType type, RuntimeType caType, Boolean inherit)
     at System.RuntimeType.GetCustomAttributes(Boolean inherit)
     at Newtonsoft.Json.Utilities.ReflectionUtils.GetAttributes(Object attributeProvider, Type attributeType, Boolean inherit)
     at Newtonsoft.Json.Serialization.JsonTypeReflector.GetAssociateMetadataTypeFromAttribute(Type type)
     at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
     at Newtonsoft.Json.Serialization.JsonTypeReflector.GetAttribute[T](Type type)
     at Newtonsoft.Json.Serialization.JsonTypeReflector.GetAttribute[T](Object provider)
     at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
     at Newtonsoft.Json.Serialization.DefaultContractResolver.CreateContract(Type objectType)
     at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
     at Newtonsoft.Json.Serialization.DefaultContractResolver.ResolveContract(Type type)
     at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
     at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)
     at Newtonsoft.Json.JsonConvert.SerializeObjectInternal(Object value, Type type, JsonSerializer jsonSerializer)
     at Newtonsoft.Json.JsonConvert.SerializeObject(Object value)
     at Microsoft.EntityFrameworkCore.LazyLoadingProxyTests.Serialization_is_disabled_for_ILazyLoader_property() in C:\aspnet\EntityFrameworkCore\test\EFCore.Proxies.Tests\LazyLoadingProxyTests.cs:line 27
Attempting to cancel the build...
C:\Users\avickers\.dotnet\buildtools\korebuild\2.2.0-preview1-20180911.1\modules\vstest\module.targets(101,5): warning MSB5021: Terminating the task executable "dotnet" and its child processes because the build was canceled. [C:\Users\avickers\.dotnet\buildtools\korebuild\2.2.0-preview1-20180911.1\KoreBuild.proj]
Terminate batch job (Y/N)?
Build FAILED.

C:\Users\avickers\.dotnet\buildtools\korebuild\2.2.0-preview1-20180911.1\modules\vstest\module.targets(101,5): warning MSB5021: Terminating the task executable "dotnet" and its child processes because the build was canceled. [C:\Users\avickers\.dotnet\buildtools\korebuild\2.2.0-preview1-20180911.1\KoreBuild.proj]
    1 Warning(s)
    0 Error(s)

Time Elapsed 00:02:42.57

[ajcvickers]

Test code:

        [Fact]
        public void Serialization_is_disabled_for_ILazyLoader_property()
        {
            using (var context = new NeweyContext(nameof(Serialization_is_disabled_for_ILazyLoader_property)))
            {
                var proxy = context.Set<March82GGtp>().CreateProxy();

                var output = JsonConvert.SerializeObject(proxy);
                Assert.Equal(
                    "{\"Id\":0}",
                    output);
            }
        }

[ajcvickers]

@JamesNK Have you seen anything like this before? (I suspect it is related to assembly versions and loading on .NET Framework rather than anything specific to JSON.NET.)

[JamesNK]

I haven't seen this kind of error before.