In file included from /opt/compiler-explorer/libs/boost_1_83_0/boost/thread/sync_queue.hpp:14:
In file included from /opt/compiler-explorer/libs/boost_1_83_0/boost/thread/concurrent_queues/sync_queue.hpp:15:
/opt/compiler-explorer/libs/boost_1_83_0/boost/thread/concurrent_queues/detail/sync_queue_base.hpp:74:23: error: no template named 'lock_guard'; did you mean 'std::lock_guard'?
74 | inline bool empty(lock_guard<mutex>& ) const BOOST_NOEXCEPT
| ^
https://godbolt.org/z/185hWToY9