Update Cli, CoreFx, CoreFx, CoreFx, CoreFx, CoreFx, CoreSetup, CoreSetup to preview2-008290, preview2-26303-02, preview2-26303-02, preview2-26303-02, preview2-26303-02, preview2-26303-02, preview2-26228-04, preview2-26228-04, respectively (master)

[dotnet-maestro-bot]

/cc @dotnet/corefxlab-contrib

[ahsonkhan]

cc @atsushikan, @pakrym, @davidfowl, @KrzysztofCwalina, @benaadams, @eerhardt - please review.

We are grabbing the latest packages (< 2 hours old).

Several tests are failing now, but the build failures have been resolved. Investigation pending.

** Build failed. 4 projects failed to build or test. **
    D:\GitHub\Fork\corefxlab\scripts\..\tests\System.Buffers.Experimental.Tests\System.Buffers.Experimental.Tests.csproj
    D:\GitHub\Fork\corefxlab\scripts\..\tests\System.Buffers.Primitives.Tests\System.Buffers.Primitives.Tests.csproj
    D:\GitHub\Fork\corefxlab\scripts\..\tests\System.IO.Pipelines.Extensions.Tests\System.IO.Pipelines.Extensions.Tests.csproj
    D:\GitHub\Fork\corefxlab\scripts\..\tests\System.Text.Http.Parser.Tests\System.Text.Http.Parser.Tests.csproj

Most of the failures have to do with ReadOnlySequence:

Error Message:
 System.InvalidOperationException : End position was not reached during enumeration.

OR

Message: System.ArgumentOutOfRangeException : Specified argument was out of the range of valid values.
Parameter name: endIndex

For example, the ReadOnlySequence constructor is throwing ArgumentOutOfRangeException exception now:
https://github.com/dotnet/corefxlab/blob/master/tests/System.Text.Http.Parser.Tests/HttpParserBasicTests.cs#L52
https://github.com/dotnet/corefx/blob/39418b1d1f0a121d3a9dbaedcf8fa52ea0bea185/src/System.Memory/src/System/ThrowHelper.cs#L143

var parser = new HttpParser();

for (int pivot = 26; pivot < requestText.Length; pivot++) {
    var front = requestText.Substring(0, pivot);
    var back = requestText.Substring(pivot);

    var frontBytes = Encoding.ASCII.GetBytes(front);
    var endBytes = Encoding.ASCII.GetBytes(back);

    var (first, last) = BufferList.Create(frontBytes, endBytes);
    var buffer = new ReadOnlySequence<byte>(first, 0, last, last.Memory.Length);

[davidfowl]

Seems like we have a bug somewhere.

/cc @benaadams

[dotnet-maestro-bot]

Couldn't update this pull request: Head commit author 'ahsonkhan' is not 'dotnet-maestro-bot'
Would have applied 'Update Cli, CoreFx, CoreFx, CoreFx, CoreFx, CoreFx, CoreSetup, CoreSetup to preview2-008290, preview2-26303-04, preview2-26303-04, preview2-26303-04, preview2-26303-04, preview2-26303-04, preview2-26228-04, preview2-26228-04, respectively'

[ahsonkhan]

I cherry-picked 6851d4b (and modified it a bit - added back CopyTo and TryGet) from #2143

[ahsonkhan]

Thanks @benaadams!

[davidfowl]

@ahsonkhan did it pass?

[ahsonkhan]

did it pass?

Except for the two tests that I skipped (waiting for new corefx build with dotnet/corefx#27691), yes, it passed. The OSX legs are broken https://github.com/dotnet/core-eng/issues/2808