When you run the following command, it has a chance not only failing with an exception (which should be printed out as "Your thoughts are too deep" implying a caught java.lang.StackOverflowError), but crashing the entire server as well.

To reproduce:

1. Start a new world with cheats enabled.
2. Run the command /script run f() -> (game_tick(); f();); f();.
3. Notice that after a couple in-game minutes (few in-game seconds), the game may crash due to a variety of exceptions.

Crash reports generated from running the command in different environments:

• java.lang.NoClassDefFoundError: Could not initialize class carpet.script.exception.ExpressionException:
  crash-2021-05-22_05.53.17-server.txt
• java.lang.BootstrapMethodError: call site initialization exception caused by java.lang.StackOverflowError:
  crash-2021-05-22_05.58.32-server.txt
• Sometimes, the command just errors out as expected with the following:

Your thoughts are too deep in system chat at pos 1
 HERE>> f() -> (game_tick(); f();); f();
Error while evaluating expression

Marking invalid - you are calling tick after tick in a recursive manner - which will overtime build up a stack, possibly holding on to some wierd memory references causing the JVM to run out of allocable memory.

you should not call gametick from a gametick since that will cause the game_tick() to never finish. In some cases it works, but in some modded servers it crashes immediately even by just calling game_tick()

I know you are not calling the game_tick() from the gametick, but you don't let the stack unfold by recursing it.