in TeamCity.VSTest.TestLogger/FailedTestsReportWriter.cs [76:84]
private IBytesWriter? InitFileMessageWriter()
{
if (!EnsureFailedTestsFileSavePathDirectoryExists())
return null;
var messagesFilePath = Path.Combine(_options.FailedTestsReportSavePath,
Guid.NewGuid().ToString("n")) + ".txt";
return _bytesWriterFactory.Create(messagesFilePath);
}