rebis-dev: thread 'main' panicked at src/machine/heap.rs:114:14

[triska]

With rebis-dev, I get:

$ scryer-prolog
?- atom_chars('\0\', Cs).
thread 'main' panicked at src/machine/heap.rs:114:14:
called `Option::unwrap()` on a `None` value
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[triska]

I now get:

?- atom_codes(A, [0]).
   A = '\x0\'thread 'main' panicked at src/machine/machine_state_impl.rs:362:46:
called `Option::unwrap()` on a `None` value
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

For the original issue, I now get an unexpected toplevel state:

?- atom_chars('\0\', Cs).
   Cs =