A Stupid Zsh Config Mistake

Today, I tried to login my Gentoo box through tty, to make a test. Unfortunately, I always failed to login. Getty immediately restarts, as soon as my system finished authentication. Of course, I did not see any error message. The only information I found in journal is:

getty@tty1.service has no holdoff time, scheduling restart.

This really makes non-sense, and also, I cannot find any solution on Google. After that, I tried to downgrade systemd from 219 to 218, not work.

As a result, I have to test with my backup Funtoo. Unfortunately, the same error occured again. However, there was some useful messages from Funtoo:

/root/.oh-my-zsh/plugins/fbterm/fbterm.plugin.zsh:4: command not found: fbterm

I am using zsh with oh-my-zsh configurations, so I disabled fbterm plugin from my .zshrc configuration. Thus the issue is fixed. I’m wondering, why Gentoo did not give me such messages?