rebase: fix bug that prevented dry-run rebases from printing failures
As far as I can tell it should be fine to unconditionally skip
_prepareabortorcontinue if we're in the process of raising an Abort
here.
Differential Revision: https://phab.mercurial-scm.org/D6226
This directory is meant to cache artifacts useful for tests (such as bundle).
Those artifacts need to be cached because they are slow to regenerate on each
test but too large to be tracked within the repository. They are not expected
to change between each run and can be cached.
The `./scripts/` contains code to generate the artifact while the `cache`
directory contains resulting artifact.