Blackfire player error

hi,

im trying to install blackfire-player by following instructions on this section:

https://github.com/blackfireio/player#download

and when im trying to run it im getting this error:

[XXX@XXXX-dev1 ~]$ blackfire-player 
PHP Parse error:  syntax error, unexpected '(' in phar:///path/to/blackfire-player.phar/Player/Console/PlayerCommand.php on line 70

thanks!