It's not always possible to request reviewers, so we don't always fail.
Unless you have write access to a repo, you cannot request reviewers for
a PR. Since there are workflows where not everyone has write access, and
we don't want to fail unnecessarily, we don't make it a requirement that
requesting reviewers has to succeed.
Test Plan:
First, ensure you don't have write access to a repo.
Create a commit.
Run spr diff
[ ] The PR should be opened and the command should only warn when it
cannot request reviewers.
It's not always possible to request reviewers, so we don't always fail.
Unless you have write access to a repo, you cannot request reviewers for a PR. Since there are workflows where not everyone has write access, and we don't want to fail unnecessarily, we don't make it a requirement that requesting reviewers has to succeed.
Test Plan:
spr diff