The error message with version 1.4.5-3 in bullseye is slightly different, but colord-sane still outputs nasty errors with high severity to the system log when connecting and disconnecting USB storage devices:
Feb 17 20:40:23 zanshin colord-sane[205757]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:40:23 zanshin colord-sane[205757]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:40:23 zanshin colord-sane[205757]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:40:23 zanshin colord-sane[205757]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:44:26 zanshin colord-sane[205880]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:44:26 zanshin colord-sane[205880]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:44:26 zanshin colord-sane[205880]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied Feb 17 20:44:26 zanshin colord-sane[205880]: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied