for safety.chunk size must be non-zeroErrorNumber()unsafe 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.raw valueMalformed size_hint `len` must be smaller than or equal to `self.capacity()`Tried to shrink to a larger capacityunsafe 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.mid > len