the program. This Undefined Behavior check is optional, and cannot be relied on for safety.to_digit: invalid radix -- radix must be in the range 2 to 36 inclusiveassertion failed: step != 0unsafe precondition(s) violated: Layout::from_size_align_unchecked requires that align is a power of 2 and the rounded-up allocation size does not exceed isize::MAX

This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.