py3: make test-ancestors.py pass on Python 3 with C extensions
# skip-blame just some b prefixes
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
new changesets d326ae2d01ee
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 4 changes to 4 files
new changesets d326ae2d01ee
updating to branch default
4 files updated, 0 files merged, 0 files removed, 0 files unresolved