StructureMap.Building.StructureMapBuildException: Error while building type Microsoft.AspNetCore.Routing.DefaultInlineConstraintResolver

[marefr]

Using .net core 1.0 and configuration according to readme and the default Web API controller (ValuesController) using attribute routing.

fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HKTKRBHJPM10": An unhandled exception was thrown by the application.
StructureMap.Building.StructureMapBuildException: Error while building type Microsoft.AspNetCore.Routing.DefaultInlineConstraintResolver.  See the inner exception for details
1.) new DefaultInlineConstraintResolver(*Default of IOptions<RouteOptions>*)
2.) Microsoft.AspNetCore.Routing.DefaultInlineConstraintResolver
3.) Instance of Microsoft.AspNetCore.Routing.IInlineConstraintResolver (Microsoft.AspNetCore.Routing.DefaultInlineConstraintResolver)
4.) new TreeRouteBuilder(*Default of ILoggerFactory*, *Default of UrlEncoder*, *Default of ObjectPool<UriBuildingContext>*, *Default of IInlineConstraintResolver*)
5.) Microsoft.AspNetCore.Routing.Tree.TreeRouteBuilder
6.) Instance of Microsoft.AspNetCore.Routing.Tree.TreeRouteBuilder
7.) Container.GetInstance(Microsoft.AspNetCore.Routing.Tree.TreeRouteBuilder)
 ---> System.ArgumentException: An item with the same key has already been added. Key: exists
   at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object key)
   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at Microsoft.Extensions.Options.OptionsCache`1.CreateOptions()
   at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory)
   at Microsoft.Extensions.Options.OptionsCache`1.get_Value()
   at Microsoft.AspNetCore.Routing.DefaultInlineConstraintResolver..ctor(IOptions`1 routeOptions)
   at lambda_method(Closure , IBuildSession , IContext )
   --- End of inner exception stack trace ---
   at lambda_method(Closure , IBuildSession , IContext )
   at StructureMap.Building.BuildPlan.Build(IBuildSession session, IContext context) in C:\BuildAgent\work\a395dbde6b793293\src\StructureMap.Shared\Building\BuildPlan.cs:line 152
   at StructureMap.BuildSession.BuildUnique(Type pluginType, Instance instance) in C:\BuildAgent\work\a395dbde6b793293\src\StructureMap.Shared\BuildSession.cs:line 120
   at StructureMap.SessionCache.GetDefault(Type pluginType, IPipelineGraph pipelineGraph) in C:\BuildAgent\work\a395dbde6b793293\src\StructureMap.Shared\SessionCache.cs:line 68
   at StructureMap.Container.GetInstance(Type pluginType) in C:\BuildAgent\work\a395dbde6b793293\src\StructureMap.Shared\Container.cs:line 721
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.AspNetCore.Mvc.Internal.AttributeRoute.GetTreeRouter()
   at Microsoft.AspNetCore.Mvc.Internal.AttributeRoute.RouteAsync(RouteContext context)
   at Microsoft.AspNetCore.Routing.RouteCollection.<RouteAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Frame`1.<RequestProcessingAsync>d__2.MoveNext()

[khellang]

I think this is a duplicate of #11.

[khellang]

@marefr Can you show your Startup class?

[marefr]

@khellang Unfortunately I cannot, it's gone. But I think it was very similar to the startup class in #11. I did however try to remove one of the populate calls, but I couldn't get it to work.