<p dir="auto">The Deprecation Cop encourages users to create issues on repositories when deprecated features are being used. This may lead to a lot of <a href="https://github.com/awatson1978/meteor-api/issues">duplicate issues</a>.</p>
<p dir="auto">I'm not <em>that</em> sure about how to implement this, but plugins repos are getting flooded with duplicate issues reported by deprecation-cop (see, for example, <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="54660281" data-permission-text="Title is private" data-url="https://github.com/thomaslindstrom/color-picker/issues/49" data-hovercard-type="issue" data-hovercard-url="/thomaslindstrom/color-picker/issues/49/hovercard" href="https://github.com/thomaslindstrom/color-picker/issues/49">thomaslindstrom/color-picker#49</a>, <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="54627644" data-permission-text="Title is private" data-url="https://github.com/thomaslindstrom/color-picker/issues/48" data-hovercard-type="issue" data-hovercard-url="/thomaslindstrom/color-picker/issues/48/hovercard" href="https://github.com/thomaslindstrom/color-picker/issues/48">thomaslindstrom/color-picker#48</a>, <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="54677135" data-permission-text="Title is private" data-url="https://github.com/thomaslindstrom/color-picker/issues/50" data-hovercard-type="issue" data-hovercard-url="/thomaslindstrom/color-picker/issues/50/hovercard" href="https://github.com/thomaslindstrom/color-picker/issues/50">thomaslindstrom/color-picker#50</a> and <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="54790659" data-permission-text="Title is private" data-url="https://github.com/thomaslindstrom/color-picker/issues/52" data-hovercard-type="issue" data-hovercard-url="/thomaslindstrom/color-picker/issues/52/hovercard" href="https://github.com/thomaslindstrom/color-picker/issues/52">thomaslindstrom/color-picker#52</a>).</p>
<p dir="auto">May be querying GitHub's api to check if there already is an issue with the same subject would work - as the subjects are being auto-generated.</p>