listen for logs from the on-device log_listener
usage: fx log [-h | --help] [--raw] [-r | --remote-symbols] LOG_LISTENER_FLAGS --raw do not attempt to symbolize the log --remote-symbols|-r attempt to resolve symbols using predefined remote symbol servers for symbols that cannot be resolved locally. See `fx help symbolize` for more information on remote symbol servers. --help|-h show this help and attempt to also show the on-device log_listener help LOG_LISTENER_FLAGS flags (e.g., severity) to pass to the on-device log_listener; supported flags are listed at https://fuchsia.dev/fuchsia-src/reference/diagnostics/consumers/log_listener. Creates an SSH connection with a device and starts listening for logs. It will listen to the device specified with `fx -d DEVICE log` or `fx set-device`, otherwise it will try to find a connected device. If the command hangs without printing anything, first check to make sure `fx shell` works on its own. For more information on flags supported by the on-device log_listener, see https://fuchsia.dev/fuchsia-src/reference/diagnostics/consumers/log_listener.