azure-functions-durable-extension: Host startup fails under certain conditions if both Durable Task and Storage extensions are referenced.

Description

Host startup will fail when all of the conditions below are met:

• Function app is deployed to a Linux Consumption plan (Premium and App Service plans untested).
• App project references both Microsoft.Azure.WebJobs.Extensions.DurableTask and Microsoft.Azure.WebJobs.Extensions.Storage packages.
• Output cleaning is disabled by setting _FunctionsSkipCleanOutput to true in csproj file.

Expected behavior

The function app should startup and run normally.

Actual behavior

Function startup will fail. Error message:

Microsoft.Extensions.Hosting.Abstractions: Value cannot be null. (Parameter ‘hostingEnvironment’).

Relevant source code snippets

csproj file:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AzureFunctionsVersion>v3</AzureFunctionsVersion>
    <RootNamespace>linux_test</RootNamespace>
    <_FunctionsSkipCleanOutput>true</_FunctionsSkipCleanOutput>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.DurableTask" Version="2.4.1" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="4.0.4" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.11" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>    
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

See here for a minimum reproduce project I created.

Known workarounds

1. Switch to a Windows plan.
2. Enable output cleaning. Due to the aggressive cleaning behavior, this might not be viable in some scenarios.

App Details

• Durable Functions extension version (e.g. v1.8.3): 2.4.1
• Azure Functions runtime version (1.0 or 2.0): v3
• Programming language used: C#
• Storage extension version: 4.0.4

Screenshots

N/A

If deployed to Azure

• Timeframe issue observed: Since at least 2021-01-27.
• Function App name: ucqu-linux-test
• Function name(s): N/A as durable functions are not required to present to trigger the issue.
• Azure region: East Asia
• Orchestration instance ID(s): N/A as host cannot start.
• Azure storage account name: ucqulinuxtest