ring <span class="arrow">&#45;&gt;</span></span> unit</span></code></div><div class="spec-doc"><p>Check that the results dir exists and sets up logging, the database, etc.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-remove_results_dir"><a href="#val-remove_results_dir" class="anchor"></a><code><span><span class="keyword">val</span> remove_results_dir : <span>unit <span class="arrow">&#45;&gt;</span></span> unit</span></code></div><div class="spec-doc"><p>Recursively delete