I think jenkins run MSTest.exe via windows cmd. The default codepage of windows cmd is cp866. If I use cyrillic in my test's output such text doesn't look good in build output.
� ࠩ��� ������� ��⮢��� ��த�.
To solve this problem it is required to run command "chcp 65001" before running MSTest.exe.
It would be good if would be possible to setup additional command in Jenkins Global Configuration, that would be run first before any MSText.exe run.