ResolvePackageAssets time offset error on Ubuntu 16.04/18.04

The following exception is thrown on debug/release:

/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018: The "ResolvePackageAssets" task failed unexpectedly. [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018: System.ArgumentOutOfRangeException: Offset must be within plus or minus 14 hours. [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018: Parameter name: offset [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at System.DateTimeOffset.ValidateOffset(TimeSpan offset) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at System.DateTimeOffset..ctor(DateTime dateTime) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at System.DateTimeOffset.FromFileTime(Int64 fileTime) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at System.IO.FileStatus.GetLastWriteTime(ReadOnlySpan`1 path, Boolean continueOnError) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at System.IO.FileSystem.GetLastWriteTime(String fullPath) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at System.IO.File.GetLastWriteTimeUtc(String path) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResolvePackageAssets.CacheReader.CreateReaderFromDisk(ResolvePackageAssets task, Byte[] settingsHash) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResolvePackageAssets.CacheReader..ctor(ResolvePackageAssets task) [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResolvePackageAssets.ReadItemGroups() [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResolvePackageAssets.ExecuteCore() [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.NET.Build.Tasks.TaskBase.Execute() [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [<redacted>.csproj]
/usr/share/dotnet/sdk/2.1.300-rc1-008673/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(197,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [<redacted>.csproj]

I was using an older version dotnet-sdk-2.1.200 then purged that and installed 2.1 RC1. i also cleared /usr/share/dotnet & $HOME/.nuget prior to upgrade.

I encountered this bug while compiling an Avalonia app. This also occurs on the console app ‘Hello World’ template and on dotnet clean.

Update : The build works when i set my timezone to UTC (Had it set to UTC+8 before). it’s quite a pain to go back and forth timezones however…

[nguerrera]

Workaround: disable package assets cache in project file

<PropertyGroup>
  <DisablePackageAssetsCache>true</DisablePackageAssetsCache>
</PropertyGroup>

NOTE: This will slow down incremental builds.

[nguerrera]

This issue was moved to dotnet/corefx#29820