@jonasschnelli wrote in #14979:
> #14573 broke < Qt5.6 compatibility due to calling the lambda version of `addAction` that was added in Qt5.6.

We currently [support](https://github.com/bitcoin/bitcoin/blob/master/doc/dependencies.md) QT >=5.2, but hardly anyone tests with that. If we make one of the Travis machines use it, we should have a better change of catching this.

See also discussion about minimum QT version in #13478 
{
        return m_wallet.GetDestValues(prefix);
    }
    void lockCoin(const COutPoint& output) override
    {
        auto locked_chain = m_wallet.chain().lock();
        LOCK(m_wallet.cs_wallet);
        return m_wallet.LockCoin(output);
    }
    void unlockCoin(const COutPoint& output) override
    {
        auto locked_chain = m_wallet.chain().lock();
        LOCK(m_wallet.cs_wallet);
        return m_wallet.UnlockCoin(output);
    }
    bool isLockedCoin(const COutPoint& output) override
    {
        auto locked_chain = m_wallet.chain().lock();
        LOCK(m_wallet.cs_wallet);
        return m_wallet.IsLockedCoin(output.hash, output.n);
    }
    void listLockedCoins(std::vector<COutPoint>& outputs) override
    {
        auto locked_chain = m_wallet.chain().lock();
        LOCK(m_wallet.cs_wallet);
        return m_wallet.ListLockedCoins(outputs);
    }
    std::unique_ptr<PendingWalletTx> createTransaction(const std::vector<CRecipient>& recipients,