This is Windows XP, MSYS 1.0.11. The following is printed by the MSYS id.exe:
uid=500(?¤┐Ё-Ёбва вRа) gid=544(Администраторы) groups=544(Администраторы)
As you can see, the username is garbled. Redirecting to a file makes it clear that the output is in the system ANSI code page (1251), while the username (which is actually Администратор) is in the OEM code page (866).