07ac67fc82
We can't use `shutil.copy_tree` here, since we need the `update=True` functionality implemented by the `distutils` variant, but not by the `shutil` one. This looks like the only place in the repo we use this functionality, so it seems fine to implement an equivalent ourselves here directly. Differential Revision: https://phabricator.services.mozilla.com/D211632
=========== mozperftest =========== **mozperftest** can be used to run performance tests against browsers. See the docs directory.