Failed building example thread_pool.cpp

while trying to build https://github.com/boostorg/cobalt/blob/master/example/thread_pool.cpp
os = Macos compiler = apple-clang compiler version = 15.0 compiler cppstd = 23 compiler libcxx = libc++
====================[ Build | toy_app | osx-ninja-debug ]=======================
"/Users/***/Applications/CLion Nova.app/Contents/bin/cmake/mac/aarch64/bin/cmake" --build /Users/***/Documents/metrics/cmake-build-osx-ninja-debug --target toy_app -j 10
[1/2] Building CXX object apps/toy/CMakeFiles/toy_app.dir/main.cpp.o
FAILED: apps/toy/CMakeFiles/toy_app.dir/main.cpp.o 
/usr/bin/c++ -DBOOST_ASIO_HAS_CO_AWAIT -DBOOST_ASIO_HAS_FILE -DBOOST_ASIO_HAS_STD_COROUTINE -DBOOST_FILESYSTEM_NO_DEPRECATED -DBOOST_SYSTEM_NO_DEPRECATED -DPROJECT_NAME=\"toy\" -DRESOURCES_DIRECTORY_NAME=\"resources\" -D__DARWIN__ -D__arm64__ -Dtoy_VERSION="v0.0.1 (build 9999), Copyright 2023 " -I/Users/***/Documents/metrics/apps/toy/src -I/Users/***/Documents/metrics/apps/toy/src/Darwin -isystem /Users/***/***/include -stdlib=libc++ -g -std=gnu++2b -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.2.sdk -fcolor-diagnostics -MD -MT apps/toy/CMakeFiles/toy_app.dir/main.cpp.o -MF apps/toy/CMakeFiles/toy_app.dir/main.cpp.o.d -o apps/toy/CMakeFiles/toy_app.dir/main.cpp.o -c /Users/***/Documents/metrics/apps/toy/main.cpp
/Users/***/Documents/metrics/apps/toy/main.cpp:21:22: error: too few arguments to function call, expected 2, have 1
cobalt::promise<int> cpu_intense_work(
                     ^~~~~~~~~~~~~~~~
/Users/***/***/include/boost/cobalt/this_coro.hpp:349:15: note: 'operator delete' declared here
  static void operator delete(void * raw, const std::size_t size) noexcept
              ^
/Users/***/Documents/metrics/apps/toy/main.cpp:29:20: error: too few arguments to function call, expected 2, have 1
cobalt::task<void> work(int min_a, int max_a, int b)
                   ^~~~
/Users/***/***/include/boost/cobalt/this_coro.hpp:349:15: note: 'operator delete' declared here
  static void operator delete(void * raw, const std::size_t size) noexcept
              ^
In file included from /Users/***/Documents/metrics/apps/toy/main.cpp:8:
In file included from /Users/***/***/include/boost/cobalt.hpp:25:
In file included from /Users/***/***/include/boost/cobalt/race.hpp:12:
/Users/***/***/include/boost/cobalt/detail/race.hpp:506:25: error: too few arguments to function call, expected 2, have 1
    static detail::fork await_impl(awaitable & this_, std::size_t idx)
                        ^~~~~~~~~~
/Users/***/***/include/boost/cobalt/detail/race.hpp:608:21: note: in instantiation of member function 'boost::cobalt::detail::race_ranged_impl<boost::asio::cancellation_type::all, std::linear_congruential_engine<unsigned int, 48271, 0, 2147483647> &, std::list<boost::cobalt::promise<void>> &>::awaitable::await_impl' requested here
      last_forked = await_impl(*this, reorder.front());
                    ^
/Users/***/***/include/boost/cobalt/detail/wait_group.hpp:38:23: note: in instantiation of member function 'boost::cobalt::detail::race_ranged_impl<boost::asio::cancellation_type::all, std::linear_congruential_engine<unsigned int, 48271, 0, 2147483647> &, std::list<boost::cobalt::promise<void>> &>::awaitable::await_ready' requested here
        return impl_->await_ready();
                      ^
/Users/***/***/include/boost/cobalt/detail/fork.hpp:113:10: note: 'operator delete' declared here
    void operator delete(void *, const std::size_t) noexcept {}
         ^
In file included from /Users/***/Documents/metrics/apps/toy/main.cpp:8:
In file included from /Users/***/***/include/boost/cobalt.hpp:17:
In file included from /Users/***/***/include/boost/cobalt/gather.hpp:12:
/Users/***/***/include/boost/cobalt/detail/gather.hpp:303:25: error: too few arguments to function call, expected 2, have 1
    static detail::fork await_impl(awaitable & this_, std::size_t idx)
                        ^~~~~~~~~~
/Users/***/***/include/boost/cobalt/detail/gather.hpp:344:23: note: in instantiation of member function 'boost::cobalt::detail::gather_ranged_impl<std::list<boost::cobalt::promise<void>> &>::awaitable::await_impl' requested here
        last_forked = await_impl(*this, last_index++);
                      ^
/Users/***/***/include/boost/cobalt/detail/wait_group.hpp:90:23: note: in instantiation of member function 'boost::cobalt::detail::gather_ranged_impl<std::list<boost::cobalt::promise<void>> &>::awaitable::await_ready' requested here
        return impl_->await_ready();
                      ^
/Users/***/***/include/boost/cobalt/detail/fork.hpp:113:10: note: 'operator delete' declared here
    void operator delete(void *, const std::size_t) noexcept {}
         ^
4 errors generated.
ninja: build stopped: subcommand failed.
boostorg / cobalt

Failed building example thread_pool.cpp #144
