The swap function reports an error when I make_unique

[Mystletaine]

When I try to use unique_ptr to manage the state machine, the compiler reports an error at make_unique: swap is ambiguous. I don't know how to specify which swap function to use.
code like this, use c++14standard gcc9
std::unique_ptr<path_sampler_statemachine::FSM_P::Instance> fsm_; path_sampler_statemachine::Context ctx_; fsm_ = std::make_unique<path_sampler_statemachine::FSM_P::Instance>(ctx_);

[andrew-gresyk]

Could you provide a minimal complete buildable example I could check?