Compiler fail

model.cpp

#include <memory>
#include <vector>

struct Model
{
    virtual ~Model() {}
};

struct PositionedModel : public Model
{
    std::unique_ptr<Model> model;
};

void frob();
void frob()
{
    std::vector<PositionedModel> models;
    PositionedModel mesh;
    models.push_back(std::move(mesh));
}