[automated] Merge branch 'release/2.1' => 'release/2.2'

[dotnet-maestro-bot]

I detected changes in the release/2.1 branch which have not been merged yet to release/2.2.
I'm a robot and am configured to help you automatically keep release/2.2 up to date, so
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This PR merges commits made on release/2.1 by the following committers:

• @crummel

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[dotnet-maestro-bot]

This pull request has been updated.

This PR merges commits made on release/2.1 by the following committers:

• @dagood
• @crummel

[dotnet-maestro-bot]

This pull request has been updated.

This PR merges commits made on release/2.1 by the following committers:

• @dagood
• @crummel

[dotnet-maestro-bot]

This pull request has been updated.

This PR merges commits made on release/2.1 by the following committers:

• @crummel
• @dagood

[dotnet-maestro-bot]

This pull request has been updated.

This PR merges commits made on release/2.1 by the following committers:

• @crummel
• @dagood

[dotnet-maestro-bot]

This pull request has been updated.

This PR merges commits made on release/2.1 by the following committers:

• @dagood
• @crummel

[dagood]

@dotnet-bot test OSX10.12 Release
java.nio.channels.ClosedChannelException

@dotnet-bot test Fedora24 Release
I think this is probably service failure:

    running restore
  Restoring packages for /mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/C#_classlib/C#_classlib.csproj...
  Failed to download package 'Microsoft.NETCore.Platforms.1.1.0' from 'https://api.nuget.org/v3-flatcontainer/microsoft.netcore.platforms/1.1.0/microsoft.netcore.platforms.1.1.0.nupkg'.
  Response status code does not indicate success: 504 (Gateway Timeout).
  Failed to download package 'Microsoft.NETCore.Platforms.1.1.0' from 'https://api.nuget.org/v3-flatcontainer/microsoft.netcore.platforms/1.1.0/microsoft.netcore.platforms.1.1.0.nupkg'.
  Response status code does not indicate success: 504 (Gateway Timeout).
/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/builtCli/sdk/2.2.100/NuGet.targets(114,5): error : Failed to download package 'Microsoft.NETCore.Platforms.1.1.0' from 'https://api.nuget.org/v3-flatcontainer/microsoft.netcore.platforms/1.1.0/microsoft.netcore.platforms.1.1.0.nupkg'. [/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/C#_classlib/C#_classlib.csproj]
/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/builtCli/sdk/2.2.100/NuGet.targets(114,5): error : Response status code does not indicate success: 504 (Gateway Timeout). [/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/C#_classlib/C#_classlib.csproj]
/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/builtCli/sdk/2.2.100/NuGet.targets(114,5): error : The feed 'nuget.org [https://api.nuget.org/v3/index.json]' lists package 'Microsoft.NETCore.Platforms.1.1.0' but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again. [/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/C#_classlib/C#_classlib.csproj]
/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/builtCli/sdk/2.2.100/NuGet.targets(114,5): error :   Unable to find package 'Microsoft.NETCore.Platforms.1.1.0'. [/mnt/resource/j/workspace/dotnet_source-build/release_2.2/Fedora24_Release_prtest/testing-smoke/C#_classlib/C#_classlib.csproj]

Heard about something similar at dotnet/coreclr#20047 (comment). Nothing on NuGet status page yet, and some of our other legs here passed anyway.

---

Side note: autoresolving the prebuilt baseline conflicts seems to have actually worked perfectly, wow.

[dagood]

Other legs hit the nuget restore issue too (didn't see them yet when I made the previous comment). Filed https://github.com/dotnet/core-eng/issues/4214 to track the problem.

[dagood]

@dotnet-bot test OSX10.12 Release
A little different than usual flakiness:

00:00:01.621 [WS-CLEANUP] Deleting project workspace...
00:00:01.831 java.io.IOException: Failed to mkdirs: /User/helix-runner/home/j/workspace/dotnet_source-build/release_2.2/OSX10.12_Release_prtest

[dagood]

Build/smoke-test worked on my local OSX on 89f122c, ignoring OSX leg in CI after retries repeatedly hit the same issue.