fe precondition(s) violated: slice::get_unchecked_mut requires that the range is within the slice This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.assertion failed: self.is_char_boundary(new_len)assertion failed: self.is_empty()#; when=assertion failed: self.no_expirations_before(level_num + 1, expiration.deadline)assertion failed: { self.levels[level].next_expiration(self.elapsed).map(|e| e.deadline >= self.elapsed).unwrap_or(true) }FromUtf8Errorbyteserrorunsafe precondition(s) violated: slice::get_unchecked requires that the index is within the 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: slice::get_unchecked_mut requires that the index is within the slice This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.assertion failed: self.consume_value().is_none()called after complete