def is_expired_build()

in libmozevent/phabricator.py [0:0]


    def is_expired_build(self, build):
        """
        Check if a build has expired, using its Phabricator diff information
        Returns True when the build has expired and should not be processed
        """
        assert isinstance(build, PhabricatorBuild)

        # We need Phabricator diff details to get the date
        if build.diff is None:
            try:
                diffs = self.api.search_diffs(diff_id=build.diff_id)
                if not diffs:
                    raise Exception(f"Diff {build.diff_id} not found on Phabricator")
                build.diff = diffs[0]
            except Exception as e:
                logger.warn("Failed to load diff", build=str(build), err=str(e))
                return False

        # Then we can check on the expiry date
        date_created = build.diff.get("dateCreated")
        if not date_created:
            logger.warn("No creation date found", build=str(build))
            return False

        logger.info("Found diff creation date", build=str(build), created=date_created)

        return datetime.now() - datetime.fromtimestamp(date_created) > self.build_expiry