Building templating in UB fails on Ubuntu2404_DevVersions_x64

[ellahathaway]

See https://dev.azure.com/dnceng-public/public/_build/results?buildId=735817&view=results as an example.

/vmr/.dotnet/sdk/9.0.100-preview.7.24357.2/Roslyn/Microsoft.CSharp.Core.targets(89,5): error MSB6006: "csc.dll" exited with code 139. [/vmr/src/templating/src/Microsoft.TemplateEngine.Utils/Microsoft.TemplateEngine.Utils.csproj::TargetFramework=netstandard2.0]
##[error]/vmr/.dotnet/sdk/9.0.100-preview.7.24357.2/Roslyn/Microsoft.CSharp.Core.targets(89,5): error MSB6006: (NETCORE_ENGINEERING_TELEMETRY=Build) "csc.dll" exited with code 139.
Microsoft.TemplateEngine.Core.Contracts -> /vmr/src/templating/artifacts/bin/Microsoft.TemplateEngine.Core.Contracts/Release/netstandard2.0/Microsoft.TemplateEngine.Core.Contracts.dll
Microsoft.TemplateSearch.Common -> /vmr/src/templating/artifacts/bin/Microsoft.TemplateSearch.Common/Release/net9.0/Microsoft.TemplateSearch.Common.dll

/vmr/src/templating/src/Microsoft.TemplateEngine.Utils/InMemoryFileSystem.cs(774,37): warning IDE0330: Use 'System.Threading.Lock' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0330) 
[/vmr/src/templating/src/Microsoft.TemplateEngine.Utils/Microsoft.TemplateEngine.Utils.csproj::TargetFramework=net9.0]
##[warning]/vmr/src/templating/src/Microsoft.TemplateEngine.Utils/InMemoryFileSystem.cs(774,37): warning IDE0330: (NETCORE_ENGINEERING_TELEMETRY=Build) Use 'System.Threading.Lock' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide0330)

[akoeplinger]

This doesn't happen anymore, closing.