Recent rolls:
https://catapult-roll.skia.org/

Presubmit failures:
https://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presubmit/builds/162963/steps/presubmit/logs/stdio
https://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presubmit/builds/162971/steps/presubmit/logs/stdio
https://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presubmit/builds/162980/steps/presubmit/logs/stdio
https://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presubmit/builds/162991/steps/presubmit/logs/stdio

All the logs have the error message:

** Presubmit ERRORS **
File is stale: build/secondary/tools/swarming_client/isolate.pydeps
To regenerate, run:
build/print_python_deps.py --root tools/swarming_client --output build/secondary/tools/swarming_client/isolate.pydeps tools/swarming_client/isolate.py


Can the trooper help triage?