UB Build Failure: validation - SignCheck timeout

[mmitche]

Issue:

SignCheck times out. This then causes a downstream failure where the signcheck log is still being held and credscan cannot access the file.

  Determining projects to restore...
  Restored D:\a\_work\1\s\eng\signing-validation.proj (in 157 ms).
  Restored D:\a\_work\1\s\eng\tools\tasks\Microsoft.DotNet.UnifiedBuild.Tasks\Microsoft.DotNet.UnifiedBuild.Tasks.csproj (in 2.07 sec).
  Microsoft.DotNet.UnifiedBuild.Tasks -> D:\a\_work\1\s\artifacts\bin\Microsoft.DotNet.UnifiedBuild.Tasks\Release\Microsoft.DotNet.UnifiedBuild.Tasks.dll
  Preparing files to sign check...
D:\a\_work\1\s\eng\signing-validation.proj(21,7): error : File productVersion.txt already exists in C:\Users\cloudtest\AppData\Local\Temp\10hsnufk.qgk\SignCheckFiles, skipping copy.
D:\a\_work\1\s\eng\signing-validation.proj(21,7): error : File productVersion.txt already exists in C:\Users\cloudtest\AppData\Local\Temp\10hsnufk.qgk\SignCheckFiles, skipping copy.
  Running SignCheck...
D:\a\_work\1\s\eng\signing-validation.proj(21,7): error : Signing validation failed: SignCheck timed out after 7200 seconds.

Then later in credscan:

The process cannot access the file 'D:\a\_work\1\a\SigningValidation\signcheck.log' because it is being used by another process.
[WARNING] Asset D:\a\_work\1\a\SigningValidation\signcheck.error.log failed to get process

The process cannot access the file 'D:\a\_work\1\a\SigningValidation\signcheck.error.log' because it is being used by another process.

[WARNING] Asset D:\a\_work\1\a\SigningValidation\signcheck.xml failed to get process
The process cannot access the file 'D:\a\_work\1\a\SigningValidation\signcheck.xml' because it is being used by another process

Aside from fixing the timeout, it may be better to update SignCheck to try and avoid holding exclusive writes on these files.

Instances:

• 20250410.1
• 20250410.3

[ellahathaway]

The timeout issue was fixed by dotnet/arcade#15701. The VMR needs to be rebootstrapped in order to consume the changes.

[ellahathaway]

it may be better to update SignCheck to try and avoid holding exclusive writes on these files

I agree with this. I'll work on these changes.

[Edit] I filed dotnet/arcade#15729 so that the current issue can be closed once the timeout issue is resolved.