Most recent failure [on master](https://cirrus-ci.com/task/6073953614561280) (https://github.com/bitcoin/bitcoin/commit/567670bec5ecf9bc252e91370382be53fd81ccee):
```bash
 test  2021-06-23T11:18:18.969000Z TestFramework.node0 (DEBUG): Node stopped 
 test  2021-06-23T11:18:18.969000Z TestFramework.bitcoincli (DEBUG): Running bitcoin-cli ['-rpcwait', '-rpcwaittimeout=5', 'echo'] 
 test  2021-06-23T11:18:23.001000Z TestFramework (ERROR): Assertion failed 
                                   Traceback (most recent call last):
                                     File "/tmp/cirrus-build/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/test/functional/test_framework/test_framework.py", line 128, in main
                                       self.run_test()
                                     File "/tmp/cirrus-build/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/test/functional/interface_bitcoin_cli.py", line 257, in run_test
                                       assert_greater_than_or_equal(time.time(), start_time + 5)
                                     File "/tmp/cirrus-build/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/test/functional/test_framework/util.py", line 61, in assert_greater_than_or_equal
                                       raise AssertionError("%s < %s" % (str(thing1), str(thing2)))
                                   AssertionError: 1624447103.0015192 < 1624447103.969648
 test  2021-06-23T11:18:23.004000Z TestFramework (DEBUG): Closing down network thread 
 test  2021-06-23T11:18:23.055000Z TestFramework (INFO): Stopping nodes 
```
{
public:
    explicit inline CConnectionFailed(const std::string& msg) :
        std::runtime_error(msg)
    {}
};
static int AppInitRPC(int argc, char* argv[])
{
    SetupCliArgs(gArgs);
    std::string error;
    if (!gArgs.ParseParameters(argc, argv, error)) {
        tfm::format(std::cerr, "Error parsing command line arguments: %s\n", error);
        return EXIT_FAILURE;
    }
    if (argc < 2 || HelpRequested(gArgs) || gArgs.IsArgSet("-version")) {
        std::string strUsage = PACKAGE_NAME " RPC client version " + FormatFullVersion() + "\n";
        if (!gArgs.IsArgSet("-version")) {
            strUsage += "\n"
                "Usage:  bitcoin-cli [options] <command> [params]  Send command to " PACKAGE_NAME "\n"
                "or:     bitcoin-cli [options] -named <command> [name=value]...  Send command to " PACKAGE_NAME " (with named arguments)\n"
                "or:     bitcoin-cli [options] help                List commands\n"