d cannot be relied on for safety.unsafe precondition(s) violated: str::get_unchecked requires that the range is within the string slice

This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.unsafe precondition(s) violated: invalid value for `char`

This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.description() is deprecated; use Displayunsafe precondition(s) violated: ptr::offset_from_unsigned requires `self >= origin`

This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.unsafe precondition(s) violated: str::get_unchecked requires that the range is within the string slice

This indicates a bug in 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 inclusiveunsafe precondition(s) violated: hint::unreachable_unchecked must never be reached

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