Php version 7+ ??

Is this plugin compatible with php 7+ and are these any concern?

FILE: /home/####/public_html/wp-content/plugins/wp-super-cache/wp-cache.php
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FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 2 LINES
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239 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4
239 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4
244 | WARNING | INI directive ‘safe_mode_gid’ is deprecated since PHP 5.3 and removed since PHP 5.4