Found the following significant warnings:
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/associated_allocator.hpp:113:49: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/execution/any_executor.hpp:681:48: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/system_executor.hpp:171:54: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/system_executor.hpp:175:28: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  175:/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/memory:730:28: 28: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]note: 'allocator<void>' has been explicitly marked deprecated here
  In file included from lib/crow.h:431:45: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  In file included from /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/any_completion_handler.hpp:23/Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/system_context.hpp:39:12: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]:
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/system_context.hpp:39:12: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  :213:36: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/io_context.hpp:819:38: warning: /Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/memory:730:28: note: 'allocator<void>' has been explicitly marked deprecated here'allocator<void>' is deprecated [-Wdeprecated-declarations]
  In file included from 822:37: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/io_context.hpp:823:29: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/buffer_registration.hpp:58:31: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  : warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/compose.hpp:82:54: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/__config:1035:54: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:53:44: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:173:55: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:178:55: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:219:14: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]expanded from macro '_LIBCPP_DEPRECATED_IN_CXX17'
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:213:14: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  14: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]In file included from ./httpgd_webserver.h:9:
  In file included from 14: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:260:31: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/impl/executor.hpp:254:31: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/thread_pool.hpp:85:36: 85:36: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/thread_pool.hpp:355:355:38::38: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/thread_pool.hpp:358:37: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  :359:21: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]/Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/thread_pool.hpp:358:37: warning: 
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/thread_pool.hpp:359:21: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/detail/impl/strand_executor_service.hpp:214:12: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/use_future.hpp:139:18: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/use_future.hpp:134:19: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/use_future.hpp:/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/__config:1058:3957:37: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  :57:37: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/detail/recycling_allocator.hpp:97:30: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
  /Volumes/Builds/packages/big-sur-arm64/Rlib/4.5/AsioHeaders/include/asio/detail/handler_alloc_helpers.hpp:123:30: warning: 'allocator<void>' is deprecated [-Wdeprecated-declarations]
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.5/httpgd.Rcheck/00install.out’ for details.
* used C++ compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
* used SDK: ‘MacOSX11.3.1.sdk’