AX_SIZEinternal error: entered unreachable codeinvalid keyPointerenvelope not droppedassertion failed: !curr_ptr.is_null()assertion failed: offset(index) == 0assertion failed: offset(other_index) == 0assertion failed: unsafe {
    ret.map_or(true,
        |block|
            {
                block.as_ref().header.start_index ==
                    self.header.start_index.wrapping_add(BLOCK_CAP)
            })
}ErrorStack-