AspNet Core 3.1 An item with the same key has already been added

I am experiencing an issue similar to issue #533 while running the Castle.Windsor.Extensions.DependencyInjection v5.1.0-beta001 package. This is only occurring only on startup under load, and seem to be resolved on subsequent requests.

This is the stack trace I am getting from the error

System.ArgumentException: An item with the same key has already been added. Key: ModelBinderFactory / IModelBinderFactory
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at Castle.MicroKernel.Lifestyle.Scoped.ScopeCache.set_Item(Object id, Burden value)
   at Castle.Windsor.Extensions.DependencyInjection.Scope.ExtensionContainerScope.GetCachedInstance(ComponentModel model, ScopedInstanceActivationCallback createInstance)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.Resolve(CreationContext context, IReleasePolicy releasePolicy)
   at Castle.MicroKernel.Handlers.DefaultHandler.ResolveCore(CreationContext context, Boolean requiresDecommission, Boolean instanceRequired, Burden& burden)
   at Castle.MicroKernel.Handlers.DefaultHandler.Resolve(CreationContext context, Boolean instanceRequired)
   at Castle.MicroKernel.Handlers.AbstractHandler.Resolve(CreationContext context)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveFromKernelByType(CreationContext context, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveFromKernel(CreationContext context, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.TryResolveCore(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency, Object& value)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.CreateConstructorArguments(ConstructorCandidate constructor, CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.Instantiate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.InternalCreate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.AbstractComponentActivator.Create(CreationContext context, Burden burden)
   at Castle.MicroKernel.Lifestyle.AbstractLifestyleManager.CreateInstance(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>n__0(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>c__DisplayClass4_0.<Resolve>b__0(Action`1 afterCreated)
   at Castle.Windsor.Extensions.DependencyInjection.Scope.ExtensionContainerScope.GetCachedInstance(ComponentModel model, ScopedInstanceActivationCallback createInstance)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.Resolve(CreationContext context, IReleasePolicy releasePolicy)
   at Castle.MicroKernel.Handlers.DefaultHandler.ResolveCore(CreationContext context, Boolean requiresDecommission, Boolean instanceRequired, Burden& burden)
   at Castle.MicroKernel.Handlers.DefaultHandler.Resolve(CreationContext context, Boolean instanceRequired)
   at Castle.MicroKernel.Handlers.AbstractHandler.Resolve(CreationContext context)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveFromKernelByType(CreationContext context, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveFromKernel(CreationContext context, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.TryResolveCore(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency, Object& value)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.CreateConstructorArguments(ConstructorCandidate constructor, CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.Instantiate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.InternalCreate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.AbstractComponentActivator.Create(CreationContext context, Burden burden)
   at Castle.MicroKernel.Lifestyle.AbstractLifestyleManager.CreateInstance(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>n__0(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>c__DisplayClass4_0.<Resolve>b__0(Action`1 afterCreated)
   at Castle.Windsor.Extensions.DependencyInjection.Scope.ExtensionContainerScope.GetCachedInstance(ComponentModel model, ScopedInstanceActivationCallback createInstance)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.Resolve(CreationContext context, IReleasePolicy releasePolicy)
   at Castle.MicroKernel.Handlers.DefaultHandler.ResolveCore(CreationContext context, Boolean requiresDecommission, Boolean instanceRequired, Burden& burden)
   at Castle.MicroKernel.Handlers.DefaultHandler.Resolve(CreationContext context, Boolean instanceRequired)
   at Castle.MicroKernel.Handlers.AbstractHandler.Resolve(CreationContext context)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveFromKernelByType(CreationContext context, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.ResolveFromKernel(CreationContext context, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.TryResolveCore(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency, Object& value)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.CreateConstructorArguments(ConstructorCandidate constructor, CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.Instantiate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.InternalCreate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.AbstractComponentActivator.Create(CreationContext context, Burden burden)
   at Castle.MicroKernel.Lifestyle.AbstractLifestyleManager.CreateInstance(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>n__0(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>c__DisplayClass4_0.<Resolve>b__0(Action`1 afterCreated)
   at Castle.Windsor.Extensions.DependencyInjection.Scope.ExtensionContainerScope.GetCachedInstance(ComponentModel model, ScopedInstanceActivationCallback createInstance)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.Resolve(CreationContext context, IReleasePolicy releasePolicy)
   at Castle.MicroKernel.Handlers.DefaultHandler.ResolveCore(CreationContext context, Boolean requiresDecommission, Boolean instanceRequired, Burden& burden)
   at Castle.MicroKernel.Handlers.DefaultHandler.Resolve(CreationContext context, Boolean instanceRequired)
   at Castle.MicroKernel.Handlers.AbstractHandler.Resolve(CreationContext context)
   at Castle.MicroKernel.DefaultKernel.ResolveComponent(IHandler handler, Type service, Arguments additionalArguments, IReleasePolicy policy, Boolean ignoreParentContext)
   at Castle.MicroKernel.DefaultKernel.Castle.MicroKernel.IKernelInternal.ResolveAll(Type service, Arguments arguments, IReleasePolicy policy)
   at Castle.MicroKernel.DefaultKernel.ResolveAll(Type service, Arguments arguments)
   at Castle.MicroKernel.Resolvers.SpecializedResolvers.CollectionResolver.Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
   at Castle.Windsor.Extensions.DependencyInjection.Resolvers.RegisteredCollectionResolver.Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.TryResolveCore(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency, Object& value)
   at Castle.MicroKernel.Resolvers.DefaultDependencyResolver.Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.CreateConstructorArguments(ConstructorCandidate constructor, CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.Instantiate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.InternalCreate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.AbstractComponentActivator.Create(CreationContext context, Burden burden)
   at Castle.MicroKernel.Lifestyle.AbstractLifestyleManager.CreateInstance(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>n__0(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.<>c__DisplayClass4_0.<Resolve>b__0(Action`1 afterCreated)
   at Castle.Windsor.Extensions.DependencyInjection.Scope.ExtensionContainerScope.GetCachedInstance(ComponentModel model, ScopedInstanceActivationCallback createInstance)
   at Castle.MicroKernel.Lifestyle.ScopedLifestyleManager.Resolve(CreationContext context, IReleasePolicy releasePolicy)
   at Castle.MicroKernel.Handlers.DefaultHandler.ResolveCore(CreationContext context, Boolean requiresDecommission, Boolean instanceRequired, Burden& burden)
   at Castle.MicroKernel.Handlers.DefaultHandler.Resolve(CreationContext context, Boolean instanceRequired)
   at Castle.MicroKernel.Handlers.AbstractHandler.Resolve(CreationContext context)
   at Castle.MicroKernel.DefaultKernel.ResolveComponent(IHandler handler, Type service, Arguments additionalArguments, IReleasePolicy policy, Boolean ignoreParentContext)
   at Castle.MicroKernel.DefaultKernel.Castle.MicroKernel.IKernelInternal.Resolve(Type service, Arguments arguments, IReleasePolicy policy, Boolean ignoreParentContext)
   at Castle.MicroKernel.DefaultKernel.Resolve(Type service, Arguments arguments)
   at Castle.Windsor.WindsorContainer.Resolve(Type service)
   at Castle.Windsor.Extensions.DependencyInjection.WindsorScopedServiceProvider.ResolveInstanceOrNull(Type serviceType, Boolean isOptional)
   at Castle.Windsor.Extensions.DependencyInjection.WindsorScopedServiceProvider.GetRequiredService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.AspNetCore.Mvc.Routing.ActionEndpointFactory.<>c__DisplayClass7_0.<CreateRequestDelegate>b__0(HttpContext context)
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(HttpContext httpContext)
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

Here is how I am registering Castle Windsor

public void ConfigureContainer(IWindsorContainer container)
{
    container.Kernel.Resolver.AddSubResolver(new CollectionResolver(container.Kernel, true));
    container.AddFacility<TypedFactoryFacility>();
    var location = AppContext.BaseDirectory;
    container.Install(
        FromAssembly.InDirectory(
            new AssemblyFilter(location)
                .FilterByName(a => a.Name.StartsWith("MyProject"))
            )
    );
}

For my service registrations I am using IWindsorInstaller, and .LifeStyle.ScopedToNetServiceScope() when I want a per-web-request lifestyle

[jonorossi]

Thanks heaps @robertcoltheart. With that known, closing as duplicate.

[robertcoltheart]

@chrisheil @generik0 I downloaded the test project and updated to the latest preview release from appveyor, and this issue goes away. So I think its safe to say the issue has already been addressed, and we can close this issue.