Sometimes I rerun the tests for debugging in the same directory, and
having it be not writable breaks `rm * -rf`.
$OSTREE init --mode=archive-z2 --repo=repo-noperm
chmod -w repo-noperm/objects
$OSTREE --repo=repo-noperm pull-local repo 2> error-message || touch expected-fail
+ chmod +w repo-noperm/objects
assert_has_file expected-fail
assert_file_has_content error-message "Permission denied"
- chmod +w repo-noperm/objects
echo "ok unwritable repo was caught"
fi