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 
```
"or:     bitcoin-cli [options] help <command>      Get help for a command\n";
            strUsage += "\n" + gArgs.GetHelpMessage();
        }
        tfm::format(std::cout, "%s", strUsage);
        if (argc < 2) {
            tfm::format(std::cerr, "Error: too few parameters\n");
            return EXIT_FAILURE;
        }
        return EXIT_SUCCESS;
    }
    if (!CheckDataDirOption()) {
        tfm::format(std::cerr, "Error: Specified data directory \"%s\" does not exist.\n", gArgs.GetArg("-datadir", ""));
        return EXIT_FAILURE;
    }
    if (!gArgs.ReadConfigFiles(error, true)) {
        tfm::format(std::cerr, "Error reading configuration file: %s\n", error);
        return EXIT_FAILURE;
    }
    
    try {
        SelectBaseParams(gArgs.GetChainName());
    } catch (const std::exception& e) {
        tfm::format(std::cerr, "Error: %s\n", e.what());
        return EXIT_FAILURE;
    }
    return CONTINUE_EXECUTION;
}
struct HTTPReply
{
    HTTPReply(): status(0), error(-1) {}