Exit code 100 returned from process: file name 'tf', arguments 'vc shelve /saved /replace /recursive /comment:@d:\a_temp\tmp79.tmp _Build_5127 d:\a\1\s /loginType:OAuth /login:.,******** /noprompt'.
Exit code 100 means that nothing succeeded.
Documentation: https://msdn.microsoft.com/en-us/library/ms194959%28v=vs.100%29.aspx?f=255&MSPPError=-2147217396
Can you try the same command from a command prompt?