setup-dotnet: dotnet build on .net standard projects not working for ubuntu-latest

I’ve been trying to build my .net standard 2.0 project with github actions, tried many times with ubuntu-latest and mac-latest but couldn’t achieve anything.

ubuntu throw me weird errors like missing assemblies and mac seems to not even run. Fortunately, could run it with windows image.

My current .yml file:

on:
  push:
    branches:
    - github-actions

jobs:
  build:
    runs-on: windows-latest
    
    steps:
    - uses: actions/checkout@master
    - name: Setup .NET Core
      uses: actions/setup-dotnet@master
      with:
        dotnet-version: '3.0.100-rc1-014190'
    - name: build library (.net core)
      run: dotnet build src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj --configuration release
    - name: build and run .net core tests
      run: |
        dotnet build src/MIDTesters.Core/MIDTesters.Core.csproj
        dotnet test src/MIDTesters.Core/MIDTesters.Core.csproj

Running with ubuntu output:

2019-09-17T23:02:05.2620428Z ##[group]Run dotnet build src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj --configuration release
2019-09-17T23:02:05.2620691Z dotnet build src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj --configuration release
2019-09-17T23:02:05.2662422Z shell: /bin/bash -e {0}
2019-09-17T23:02:05.2662584Z env:
2019-09-17T23:02:05.2662703Z   DOTNET_ROOT: /opt/hostedtoolcache/dncs
2019-09-17T23:02:05.2662827Z ##[endgroup]
2019-09-17T23:02:05.4180582Z 
2019-09-17T23:02:05.4217683Z Welcome to .NET Core 3.0!
2019-09-17T23:02:05.4220300Z ---------------------
2019-09-17T23:02:05.4221302Z SDK Version: 3.0.100-rc1-014190
2019-09-17T23:02:05.4221652Z 
2019-09-17T23:02:05.4221946Z Telemetry
2019-09-17T23:02:05.4222433Z ---------
2019-09-17T23:02:05.4223775Z The .NET Core tools collect usage data in order to help us improve your experience. The data is anonymous. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
2019-09-17T23:02:05.4224879Z 
2019-09-17T23:02:05.4225645Z Read more about .NET Core CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry
2019-09-17T23:02:05.4225904Z 
2019-09-17T23:02:05.4226392Z ----------------
2019-09-17T23:02:05.4226990Z Explore documentation: https://aka.ms/dotnet-docs
2019-09-17T23:02:05.4227390Z Report issues and find source on GitHub: https://github.com/dotnet/core
2019-09-17T23:02:05.4228011Z Find out what's new: https://aka.ms/dotnet-whats-new
2019-09-17T23:02:05.4228881Z Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
2019-09-17T23:02:05.4242823Z Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs
2019-09-17T23:02:05.4243783Z Write your first app: https://aka.ms/first-net-core-app
2019-09-17T23:02:05.4245113Z --------------------------------------------------------------------------------------
2019-09-17T23:02:05.8242698Z Microsoft (R) Build Engine version 16.3.0-preview-19455-02+4a2d77107 for .NET Core
2019-09-17T23:02:05.8243643Z Copyright (C) Microsoft Corporation. All rights reserved.
2019-09-17T23:02:05.8244449Z 
2019-09-17T23:02:07.5566234Z   Restore completed in 992.31 ms for /home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj.
2019-09-17T23:02:07.6952221Z   You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview
2019-09-17T23:02:09.5788368Z ##[error]Job/JobMessages.cs(17,19): error CS0103: The name 'Mid0034' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5802250Z ##[error]Job/JobMessages.cs(17,63): error CS0246: The type or namespace name 'Mid0034' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5804023Z ##[error]Job/JobMessages.cs(18,19): error CS0103: The name 'Mid0035' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5806304Z ##[error]Job/JobMessages.cs(18,63): error CS0246: The type or namespace name 'Mid0035' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5807773Z ##[error]Job/JobMessages.cs(19,19): error CS0103: The name 'Mid0036' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5809512Z ##[error]Job/JobMessages.cs(19,63): error CS0246: The type or namespace name 'Mid0036' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5810835Z ##[error]Job/JobMessages.cs(20,19): error CS0103: The name 'Mid0037' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5812225Z ##[error]Job/JobMessages.cs(20,63): error CS0246: The type or namespace name 'Mid0037' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5813491Z ##[error]Job/JobMessages.cs(21,19): error CS0103: The name 'Mid0038' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5815830Z ##[error]Job/JobMessages.cs(21,63): error CS0246: The type or namespace name 'Mid0038' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5817272Z ##[error]Job/Advanced/AdvancedJobMessages.cs(20,19): error CS0103: The name 'Mid0127' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5819055Z ##[error]Job/Advanced/AdvancedJobMessages.cs(20,63): error CS0246: The type or namespace name 'Mid0127' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5820437Z ##[error]MidInterpreter.cs(113,22): error CS0103: The name 'KeepAlive' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5821914Z ##[error]MidInterpreter.cs(114,32): error CS0246: The type or namespace name 'KeepAlive' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5823263Z ##[error]Tightening/TighteningMessages.cs(13,19): error CS0103: The name 'Mid0060' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5825514Z ##[error]Tightening/TighteningMessages.cs(13,63): error CS0246: The type or namespace name 'Mid0060' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5826949Z ##[error]Tightening/TighteningMessages.cs(14,19): error CS0103: The name 'Mid0061' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5829152Z ##[error]Tightening/TighteningMessages.cs(14,63): error CS0246: The type or namespace name 'Mid0061' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5832063Z ##[error]Tightening/TighteningMessages.cs(15,19): error CS0103: The name 'Mid0062' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5833777Z ##[error]Tightening/TighteningMessages.cs(15,63): error CS0246: The type or namespace name 'Mid0062' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5837652Z ##[error]Tightening/TighteningMessages.cs(17,19): error CS0103: The name 'Mid0064' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5844424Z ##[error]Tightening/TighteningMessages.cs(17,63): error CS0246: The type or namespace name 'Mid0064' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5846080Z ##[error]Tightening/TighteningMessages.cs(18,19): error CS0103: The name 'Mid0065' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5856755Z ##[error]Tightening/TighteningMessages.cs(18,63): error CS0246: The type or namespace name 'Mid0065' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5872793Z 
2019-09-17T23:02:09.5873024Z Build FAILED.
2019-09-17T23:02:09.5873079Z 
2019-09-17T23:02:09.5874322Z ##[error]Job/JobMessages.cs(17,19): error CS0103: The name 'Mid0034' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5876375Z ##[error]Job/JobMessages.cs(17,63): error CS0246: The type or namespace name 'Mid0034' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5877883Z ##[error]Job/JobMessages.cs(18,19): error CS0103: The name 'Mid0035' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5879409Z ##[error]Job/JobMessages.cs(18,63): error CS0246: The type or namespace name 'Mid0035' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5881021Z ##[error]Job/JobMessages.cs(19,19): error CS0103: The name 'Mid0036' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5882705Z ##[error]Job/JobMessages.cs(19,63): error CS0246: The type or namespace name 'Mid0036' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5884000Z ##[error]Job/JobMessages.cs(20,19): error CS0103: The name 'Mid0037' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5886153Z ##[error]Job/JobMessages.cs(20,63): error CS0246: The type or namespace name 'Mid0037' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5887843Z ##[error]Job/JobMessages.cs(21,19): error CS0103: The name 'Mid0038' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5889401Z ##[error]Job/JobMessages.cs(21,63): error CS0246: The type or namespace name 'Mid0038' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5890865Z ##[error]Job/Advanced/AdvancedJobMessages.cs(20,19): error CS0103: The name 'Mid0127' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5892330Z ##[error]Job/Advanced/AdvancedJobMessages.cs(20,63): error CS0246: The type or namespace name 'Mid0127' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5893960Z ##[error]MidInterpreter.cs(113,22): error CS0103: The name 'KeepAlive' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5896349Z ##[error]MidInterpreter.cs(114,32): error CS0246: The type or namespace name 'KeepAlive' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5897781Z ##[error]Tightening/TighteningMessages.cs(13,19): error CS0103: The name 'Mid0060' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5899419Z ##[error]Tightening/TighteningMessages.cs(13,63): error CS0246: The type or namespace name 'Mid0060' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5901017Z ##[error]Tightening/TighteningMessages.cs(14,19): error CS0103: The name 'Mid0061' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5902458Z ##[error]Tightening/TighteningMessages.cs(14,63): error CS0246: The type or namespace name 'Mid0061' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5904688Z ##[error]Tightening/TighteningMessages.cs(15,19): error CS0103: The name 'Mid0062' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5906397Z ##[error]Tightening/TighteningMessages.cs(15,63): error CS0246: The type or namespace name 'Mid0062' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5908268Z ##[error]Tightening/TighteningMessages.cs(17,19): error CS0103: The name 'Mid0064' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5910514Z ##[error]Tightening/TighteningMessages.cs(17,63): error CS0246: The type or namespace name 'Mid0064' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5911860Z ##[error]Tightening/TighteningMessages.cs(18,19): error CS0103: The name 'Mid0065' does not exist in the current context [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5913228Z ##[error]Tightening/TighteningMessages.cs(18,63): error CS0246: The type or namespace name 'Mid0065' could not be found (are you missing a using directive or an assembly reference?) [/home/runner/work/OpenProtocolInterpreter/OpenProtocolInterpreter/src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj]
2019-09-17T23:02:09.5913674Z     0 Warning(s)
2019-09-17T23:02:09.5913798Z     24 Error(s)
2019-09-17T23:02:09.5913848Z 
2019-09-17T23:02:09.5913999Z Time Elapsed 00:00:03.68

Also running on windows output:

2019-09-17T23:03:41.1151413Z ##[group]Run dotnet build src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj --configuration release
2019-09-17T23:03:41.1151832Z dotnet build src/OpenProtocolInterpreter/OpenProtocolInterpreter.csproj --configuration release
2019-09-17T23:03:41.1156477Z shell: C:\windows\system32\cmd.exe /D /E:ON /V:OFF /S /C "CALL "{0}""
2019-09-17T23:03:41.1156631Z env:
2019-09-17T23:03:41.1156735Z   DOTNET_ROOT: C:\hostedtoolcache\windows\dncs
2019-09-17T23:03:41.1156843Z ##[endgroup]
2019-09-17T23:03:47.0289618Z 
2019-09-17T23:03:47.0337013Z Welcome to .NET Core 3.0!
2019-09-17T23:03:47.0337558Z ---------------------
2019-09-17T23:03:47.0337957Z SDK Version: 3.0.100-rc1-014190
2019-09-17T23:03:47.0338151Z 
2019-09-17T23:03:47.0338385Z Telemetry
2019-09-17T23:03:47.0338603Z ---------
2019-09-17T23:03:47.0339229Z The .NET Core tools collect usage data in order to help us improve your experience. The data is anonymous. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.
2019-09-17T23:03:47.0339634Z 
2019-09-17T23:03:47.0339956Z Read more about .NET Core CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry
2019-09-17T23:03:47.0340171Z 
2019-09-17T23:03:47.0340510Z ----------------
2019-09-17T23:03:47.0341091Z Explore documentation: https://aka.ms/dotnet-docs
2019-09-17T23:03:47.0341458Z Report issues and find source on GitHub: https://github.com/dotnet/core
2019-09-17T23:03:47.0341658Z Find out what's new: https://aka.ms/dotnet-whats-new
2019-09-17T23:03:47.0342266Z Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
2019-09-17T23:03:47.0342527Z Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs
2019-09-17T23:03:47.0342716Z Write your first app: https://aka.ms/first-net-core-app
2019-09-17T23:03:47.0437470Z --------------------------------------------------------------------------------------
2019-09-17T23:03:48.5768526Z Microsoft (R) Build Engine version 16.3.0-preview-19455-02+4a2d77107 for .NET Core
2019-09-17T23:03:48.5811521Z Copyright (C) Microsoft Corporation. All rights reserved.
2019-09-17T23:03:48.5814862Z 
2019-09-17T23:03:51.6231437Z   Restore completed in 1.31 sec for D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\OpenProtocolInterpreter\OpenProtocolInterpreter.csproj.
2019-09-17T23:03:51.7568082Z   You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview
2019-09-17T23:03:54.1003545Z   OpenProtocolInterpreter -> D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\OpenProtocolInterpreter\bin\release\netstandard2.0\OpenProtocolInterpreter.dll
2019-09-17T23:03:54.3738575Z   Successfully created package 'D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\OpenProtocolInterpreter\bin\release\OpenProtocolInterpreter.3.0.1.nupkg'.
2019-09-17T23:03:54.3995087Z 
2019-09-17T23:03:54.3996256Z Build succeeded.
2019-09-17T23:03:54.3996816Z     0 Warning(s)
2019-09-17T23:03:54.3997284Z     0 Error(s)
2019-09-17T23:03:54.3997765Z 
2019-09-17T23:03:54.3998730Z Time Elapsed 00:00:05.50
2019-09-17T23:03:54.4630218Z ##[group]Run dotnet build src/MIDTesters.Core/MIDTesters.Core.csproj
2019-09-17T23:03:54.4630470Z dotnet build src/MIDTesters.Core/MIDTesters.Core.csproj
2019-09-17T23:03:54.4630587Z dotnet test src/MIDTesters.Core/MIDTesters.Core.csproj
2019-09-17T23:03:54.4630772Z shell: C:\windows\system32\cmd.exe /D /E:ON /V:OFF /S /C "CALL "{0}""
2019-09-17T23:03:54.4630877Z env:
2019-09-17T23:03:54.4630969Z   DOTNET_ROOT: C:\hostedtoolcache\windows\dncs
2019-09-17T23:03:54.4631069Z ##[endgroup]
2019-09-17T23:03:54.8694287Z Microsoft (R) Build Engine version 16.3.0-preview-19455-02+4a2d77107 for .NET Core
2019-09-17T23:03:54.8695224Z Copyright (C) Microsoft Corporation. All rights reserved.
2019-09-17T23:03:54.8696153Z 
2019-09-17T23:03:55.5908468Z   Restore completed in 27.91 ms for D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\OpenProtocolInterpreter\OpenProtocolInterpreter.csproj.
2019-09-17T23:04:48.9035401Z   Restore completed in 53.3 sec for D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\MIDTesters.Core\MIDTesters.Core.csproj.
2019-09-17T23:04:49.0177870Z   You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview
2019-09-17T23:04:50.2825575Z   OpenProtocolInterpreter -> D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\OpenProtocolInterpreter\bin\Debug\netstandard2.0\OpenProtocolInterpreter.dll
2019-09-17T23:04:50.5405212Z   Successfully created package 'D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\OpenProtocolInterpreter\bin\Debug\OpenProtocolInterpreter.3.0.1.nupkg'.
2019-09-17T23:04:51.5821959Z   MIDTesters.Core -> D:\a\OpenProtocolInterpreter\OpenProtocolInterpreter\src\MIDTesters.Core\bin\Debug\netcoreapp2.0\MIDTesters.Core.dll
2019-09-17T23:04:51.5907956Z 
2019-09-17T23:04:51.5908658Z Build succeeded.
2019-09-17T23:04:51.5909128Z     0 Warning(s)
2019-09-17T23:04:51.5909362Z     0 Error(s)
2019-09-17T23:04:51.5910544Z 
2019-09-17T23:04:51.5910887Z Time Elapsed 00:00:56.66

mac not running:

Any thoughts on it? Am I missing something?