When a player named "save" logs in, you get a crash after some time:
2015-10-17 18:50:46: ERROR[Main]: UNRECOVERABLE error occurred. Stopping server. Please fix the following error:
2015-10-17 18:50:46: ERROR[Main]: Runtime error from mod 'hunger' in callback environment_Step(): hunger/functions.lua:58: attempt to call field 'save' (a table value)
2015-10-17 18:50:46: ERROR[Main]: stack traceback:
2015-10-17 18:50:46: ERROR[Main]: hunger/functions.lua:58: in function 'update_hu
nger'
2015-10-17 18:50:46: ERROR[Main]: hunger/functions.lua:133: in function <hunger/functions.lua:109>
2015-10-17 18:50:46: ERROR[Main]: builtin/game/register.lua:355: in function <builtin/game/register.lua:335>
When a player named "save" logs in, you get a crash after some time: