Build failing because of Signtool Error

##[error].packages\microsoft.dotnet.arcade.sdk\1.0.0-beta.19303.8\tools\Tools.proj(0,0): error NU3027: Package 'Microsoft.DotNet.SignTool 1.0.0-beta.19303.8' from source 'https://dotnetfeed.blob.core.windows.net/arcade-validation/index.json': The signature should be timestamped to enable long-term signature validity after the certificate has expired.

https://dev.azure.com/dnceng/internal/_build/results?buildId=210368&_a=summary

/cc @dotnet/wpf-developers /cc @mmitche

[JohnTortugo]

@JohnTortugo, in your case when two packages were produced, I’m assuming that they happened on different build-definitions? If so, I think that would explain the problem…

Yes, different build definitions.

[mmitche]

My understanding (fuzzy!) is that what happens is:

• The first build starts, gets assigned the default build number 20190613.1
• The first build runs updatebuildnumber, changes to 16.3.0-preview.20190613.1
• The second build starts, gets assigned a default build number–but because 20190613.1 is no longer taken, it gets 20190613.1 again
• Second build updates version number to the same as the first build 😦

I think this could be gotten around with a counter, if we changed the initial assignment of “OfficialBuildId” that gets passed into the Arcade build: https://github.com/dotnet/arcade/blob/ff0f47189f7d8a8b4ad353e37f3fc34aaa3090df/azure-pipelines.yml#L75

That sounds like more an AzDO issue than anything else. We should follow up with them I think.