[Pkg-bazaar-maint] Bug#822116: bzr: FTBFS in testing (test fail)

[Santiago Vila]

Package: src:bzr
Version: 2.7.0-4
Severity: serious

Dear maintainer:

This package currently fails to build from source in stretch.

--------------------------------------------------------------
Traceback (most recent call last):
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/plugins/weave_fmt/test_bzrdir.py", line 426, in te
st_lock_file
    b = branch.Branch.open(self.get_url())
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/branch.py", line 186, in open
    possible_transports=possible_transports, _unsupported=_unsupported)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/controldir.py", line 689, in open
    _unsupported=_unsupported)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/controldir.py", line 718, in open_from_transport
    find_format, transport, redirected)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/transport/__init__.py", line 1719, in do_catching_
redirections
    return action(transport)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/controldir.py", line 706, in find_format
    probers=probers)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/controldir.py", line 1151, in find_format
    return prober.probe_transport(transport)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/bzrdir.py", line 1237, in probe_transport
    format_string = transport.get_bytes(".bzr/branch-format")
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/transport/sftp.py", line 422, in get_bytes
    f = self.get(relpath)
  File "/<<PKGBUILDDIR>>/build/lib.linux-x86_64-2.7/bzrlib/transport/sftp.py", line 414, in get
    f.prefetch()
TypeError: prefetch() takes exactly 2 arguments (1 given)
--------------------------------------------------------------

I can send the full build log if required, or you can also get the one
from reproducible builds, as it fails in the same way:

https://reproducible.debian.net/rbuild/testing/amd64/bzr_2.7.0-4.rbuild.log

Thanks.