[bzrlib]% ../bzr selftest -s bt.test_osutils
Traceback (most recent call last):
  File "../bzr", line 103, in <module>
    import bzrlib
  File "/storage/parth/src/bzr.dev/300062-bad-pattern-error-part-1/bzrlib/__init__.py", line 46, in <module>
    import bzrlib.lazy_regex
  File "/storage/parth/src/bzr.dev/300062-bad-pattern-error-part-1/bzrlib/lazy_regex.py", line 25, in <module>
    from bzrlib import errors
  File "/storage/parth/src/bzr.dev/300062-bad-pattern-error-part-1/bzrlib/errors.py", line 20, in <module>
    from bzrlib import (
  File "/storage/parth/src/bzr.dev/300062-bad-pattern-error-part-1/bzrlib/osutils.py", line 2166, in <module>
    @deprecated_function(deprecated_in((2, 2, 0)))
  File "/storage/parth/src/bzr.dev/300062-bad-pattern-error-part-1/bzrlib/symbol_versioning.py", line 47, in deprecated_in
    % bzrlib._format_version_tuple(version_tuple))
AttributeError: 'module' object has no attribute '_format_version_tuple'
[bzrlib]%