Scap currently doesn't report what file was synced if it fails. When using scap pull given the double IRC/SAL message it's already clear from the context, but given that sync-file report only once on IRC/SAL, it's not clear what failed:
!log niharika29@tin scap failed: average error rate on 9/11 canaries increased by 10x (rerun with --force to override this check, see https://logstash.wikimedia.org/goto/2cc7028226a539553178454fc2f14459 for details)
Actionable from https://wikitech.wikimedia.org/wiki/Incident_documentation/20180129-MediaWiki.