Starting Selenium Grid EventBus...
Appending Selenium option: --tracing false
Tracing is disabled
Using JAVA_OPTS:  -Dwebdriver.remote.enableTracing=false
"--bind-host": couldn't convert "--tracing" to a boolean
Usage: event-bus [options]
  Options:
    --allow-cors
      Whether the Selenium server should allow web browser connections from
      any host
      Default: false
    --bind-bus
      Whether the connection string should be bound or connected. When true,
      the component will be bound to the Event Bus (as in the Event Bus will
      also be started by the component, typically by the Distributor and the
      Hub). When false, the component will connect to the Event Bus.
    --bind-host
      Whether the server should bind to the host address/name, or only use it
      to report its reachable url. Helpful in complex network topologies where
      the server cannot report itself with the current IP/hostname but rather
      an external IP or hostname (e.g. inside a Docker container).
      Default: true
    --config
      Config file to read from (may be specified more than once)
    --config-help
      Output detailed information about config options
      Default: false
    --eventbus-heartbeat-period
      How often, in seconds, will the EventBus socket send heartbeats
      Default: 0
    --events-implementation
      Full classname of non-default event bus implementation
    --external-url
      External URL where component is generally available. Useful on complex
      network topologies when components are on different networks and proxy
      servers are involved.
    --host
      Server IP or hostname: usually determined automatically.
    --http-logs
      Enable http logging. Tracing should be enabled to log http logs.
      Default: false
    --https-certificate
      Server certificate for https. Get more detailed information by running
      "java -jar selenium-server.jar info security"
    --https-private-key
      Private key for https. Get more detailed information by running "java
      -jar selenium-server.jar info security"
    --log
      File to write out logs. Ensure the file path is compatible with the
      operating system's file path. Windows path example:
      \\path\to\file\gridlog.log OR C:\path\path\to\file\gridlog.log
      Linux/Unix/MacOS path example: /path/to/file/gridlog.log
    --log-encoding
      Log encoding
    --log-level
      Log level. Default logging level is INFO. Log levels are described here
      https://docs.oracle.com/javase/7/docs/api/java/util/logging/Level.html
      Default: INFO
    --log-timestamp-format
      Format of the timestamp in log output
    --max-threads
      Maximum number of listener threads. Default value is: (available
      processors) * 3.
      Default: 0
    --plain-logs
      Use plain log lines
      Default: true
    -p, --port
      Port to listen on. There is no default as this parameter is used by
      different components, for example Router/Hub/Standalone will use 4444
      and Node will use 5555.
    --publish-events
      Connection string for publishing events to the event bus
    --registration-secret
      Node registration secret
    --structured-logs
      Use structured logs
      Default: false
    --subscribe-events
      Connection string for subscribing to events from the event bus
    --tracing
      Enable trace collection
      Default: true
    --version
      Displays the version and exits.
      Default: false