Step 10/13 : RUN dotnet build .\samples\MusicStore.Standalone
---> Running in 757c95651249
Project MusicStore.Standalone (.NETCoreApp,Version=v1.1) will be compiled because expected outputs are missing
Compiling MusicStore.Standalone for .NETCoreApp,Version=v1.1
C:\Program Files\dotnet\dotnet.exe compile-csc @C:\MusicStore\samples\MusicStore.Standalone\obj\Debug\netcoreapp1.1\dotn
et-compile.rsp returned Exit Code 1
C:\MusicStore\samples\MusicStore\MessageServices.cs(7,23): error CS0433: The type 'Task' exists in both 'System.Threadin
g.Tasks, Version=4.0.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and 'System.Runtime, Version=4.2.0.0, Cultu
re=neutral, PublicKeyToken=b03f5f7f11d50a3a'
C:\MusicStore\samples\MusicStore\MessageServices.cs(13,23): error CS0433: The type 'Task' exists in both 'System.Threadi
ng.Tasks, Version=4.0.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and 'System.Runtime, Version=4.2.0.0, Cult
ure=neutral, PublicKeyToken=b03f5f7f11d50a3a'
C:\MusicStore\samples\MusicStore\Controllers\AccountController.cs(49,42): error CS1983: The return type of an async meth
od must be void, Task or Task<T>
C:\MusicStore\samples\MusicStore\Controllers\AccountController.cs(49,22): error CS0433: The type 'Task<TResult>' exists
in both 'System.Threading.Tasks, Version=4.0.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and 'System.Runtime
, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
C:\MusicStore\samples\MusicStore\Controllers\AccountController.cs(83,41): error CS1983: The return type of an async meth
od must be void, Task or Task<T>
C:\MusicStore\samples\MusicStore\Controllers\AccountController.cs(83,22): error CS0433: The type 'Task<TResult>' exists
in both 'System.Threading.Tasks, Version=4.0.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' and 'System.Runtime
, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
C:\MusicStore\samples\MusicStore\Controllers\AccountController.cs(106,41): error CS1983: The return type of an async met
hod must be void, Task or Task<T>