/urfave/cli causing "Error decoding json invalid character "-" (homeassistant log) '\x1b' "?

Any ideas what might be causing these error messages in the log files on startup?

core-ssh:/config# hassio su logs

Error decoding json invalid character '\x1b' looking for beginning of value: 18-10-20 14:55:26 INFO (MainThread) [hassio.homeassistant] Updated Home Assistant API token

Error decoding json invalid character '-' after top-level value: 2018-10-20 11:37:08 INFO (MainThread) [homeassistant.components.automation] Initialized trigger House Mode-Morning

  • Appears only using the cli .
  • These errors appear BEFORE the first entry into the log file. (curious)

Something https://github.com/urfave/cli is choking on?
Could be an error in the logfile init process?
(My docker-fu is not strong enough to peek at the internal log files)