not exceed isize::MAX

This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.is_nonoverlapping: `size_of::<T>() * count` overflows a usize`len` must be smaller than or equal to `self.capacity()`Tried to shrink to a larger capacity`new_layout.size()` must be smaller than or equal to `old_layout.size()`align_offset: align is not a power-of-two€