When debugfs runs with the "-c" option, it prints a scary looking message:

catastrophic mode - not reading inode or group bitmaps

This is totally normal and expected behavior for the "-c" option, which is used to significantly shorten the debugfs command execution time by not reading metadata that isn't needed.

Since there is often confusion about what this message means, it would be better to just avoid printing anything at all, since the use of "-c" is expressly requesting this behavior, and there are no messages printed out for other options.