Changing the timeout implementation to allow for per-check timeouts would be pretty straightforward:

1. Remove the timeout parameter from checks.execute
2. Introduce a timeout attribute/parameter in checks.Check (checks.load will pass everything specified in the YAML as a keyword argument so no change there)
3. Implement a checks.CheckJob.hastimedout method that compares now the current job duration and the check's timeout.
4. Refactor checks.execute to test job.hastimedout in the current path that handles timeouts