MassTransit: MassTransit 5.0.1 assembly mismatch - public key token

Is this a bug report?

Yes

Can you also reproduce the problem with the lastest version?

Yes (stable 5.0.1 and 5.0.1.1500-develop). It works fine with 4.0.1.

Environment

1. Operating system: Windows 10
2. Visual Studio version: 2017
3. Dotnet version: .NET 4.7.1 and netstandard 2.0

Steps to Reproduce

Hi, there might be an issue about MassTransit dll signatures in the latest version:

1. Create a netstandard2.0 nuget package or dll which uses MassTransit.
2. Create a new .net project and call this package.
3. Start the solution.

Expected Behavior

Masstransit server starts.

Actual Behavior

A MassTransit exception is thrown:

Message	"Could not load file or assembly 'MassTransit, Version=5.0.1.1500, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
 The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"

FusionLog "=== Pre-bind state information ===
LOG: DisplayName = MassTransit, Version=5.0.1.1500, Culture=neutral, PublicKeyToken=null\n (Fully-specified)
LOG: Appbase = file:///D:/LocalSources/TestMassTransit3/TestMassTransit3/bin/Debug/net471/
LOG: Initial PrivatePath = NULL
Calling assembly : Spd.Communication.Queuing, Version=2.3.2.0, Culture=neutral, PublicKeyToken=null.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: D:\\LocalSources\\TestMassTransit3\\TestMassTransit3\\bin\\Debug\\net471\\TestMassTransit3.exe.Config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\config\\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///D:/LocalSources/TestMassTransit3/TestMassTransit3/bin/Debug/net471/MassTransit.DLL.
WRN: Comparing the assembly name resulted in the mismatch: PUBLIC KEY TOKEN
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated."

This error only occurs when referencing MassTransit through an external library, if we call the same code directly everything is fine.

Thanks for your help.