Serverless部署出现无效跨设备链接错误，求排查原因

本地安装sendgrid包后运行正常，但执行serverless deploy时失败，报错信息如下：

ERROR: Exception:
Traceback (most recent call last):
  File "/var/lang/lib/python3.8/shutil.py", line 791, in move
    os.rename(src, real_dst)
OSError: [Errno 18] Invalid cross-device link: '/tmp/pip-target-i40hnhmr/lib/python/jmespath-1.0.1.dist-info' -> '/var/task/jmespath-1.0.1.dist-info'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/var/lang/lib/python3.8/site-packages/pip/_internal/cli/base_command.py", line 160, in exc_logging_wrapper
    status = run_func(*args)
  File "/var/lang/lib/python3.8/site-packages/pip/_internal/cli/req_command.py", line 247, in wrapper
    return func(self, options, args)
  File "/var/lang/lib/python3.8/site-packages/pip/_internal/commands/install.py", line 566, in run
    self._handle_target_dir(
  File "/var/lang/lib/python3.8/site-packages/pip/_internal/commands/install.py", line 625, in _handle_target_dir
    shutil.move(os.path.join(lib_dir, item), target_item_dir)
  File "/var/lang/lib/python3.8/shutil.py", line 807, in move
    copytree(src, real_dst, copy_function=copy_function,
  File "/var/lang/lib/python3.8/shutil.py", line 557, in copytree
    return _copytree(entries=entries, src=src, dst=dst, symlinks=symlinks,
  File "/var/lang/lib/python3.8/shutil.py", line 458, in _copytree
    os.makedirs(dst, exist_ok=dirs_exist_ok)
  File "/var/lang/lib/python3.8/os.py", line 223, in makedirs
    mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/var/task/jmespath-1.0.1.dist-info'

已尝试切换Docker文件共享模式（VirtioFS/osxfs Legacy）、删除Docker镜像及~/Library/Caches/serverless-python-requirements/缓存，执行sudo serverless deploy/sudo serverless package仍报错，求问题原因。

问题原因 #

• 跨设备移动+权限限制双重冲突：serverless-python-requirements插件在Docker容器内安装依赖时，先尝试用os.rename把/tmp（容器临时文件系统）下的依赖目录移到/var/task（挂载的本地项目目录），但这两个路径属于不同设备，触发Invalid cross-device link错误；随后shutil自动降级为复制操作，但容器内非root用户对挂载的/var/task目录没有足够写入权限，导致最终的PermissionError。
• sudo权限未同步到容器内：本地执行sudo serverless时，仅提升了本地进程的权限，但Docker容器内仍以默认的非root用户运行，无法获得挂载目录的写入权限，sudo操作无效。
• 容器内残留缓存未彻底清理：仅删除本地缓存和镜像可能不够，容器内的临时文件或旧权限配置未被完全清除，导致重复触发相同错误。

内容的提问来源于stack exchange，提问作者Griffin Staples