D2261: py3: use pycompat.bytestr to convert str to bytes

[yuja (Yuya Nishihara)]

yuja requested changes to this revision.
yuja added a comment.
This revision now requires changes to proceed.


  Here `'%r' % pycompat.bytestr(user)` is preferred since repr(user) would
  leave `b''` prefix in error message.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2261

To: pulkit, #hg-reviewers, yuja
Cc: yuja, mercurial-devel