More than one element found for locator by.repeater

Protractor Code to access the repeater which i am using is below

    element.all(by.repeater('x in parked'));  

HTML Code

<div class="row content">
    <div class="col-sm-2">           
        <div ng-show="role != 3">
            <label for="parked" style="color:#0000ff;font-weight:bold">PARKED</label>
            <ul style="color:#006400;font-weight:bold" class="arriv-depart">
                <li ng-repeat="x in parked" popover-placement="top" data-popover-template="dynamicPopover3.templateUrl" data-popover-trigger="mouseenter"></li>
             </ul>
        </div>
    </div>
</div>      

The problem is, protractor throws a warning:

    W/element - more than one element found for locator by.repeater("x in parked") - the first result will be used.   

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I need to display all the elements present in Parked.