Rust contributor here, we actually were thinking about migrating off of Github Issues a few years back in favor of Bugzilla, both due to greater features (it has basically everything from the Dear Github letter, and then some) and familiarity (Firefox uses Bugzilla, so all Mozilla employees are familiar with it, and we have to integrate with Bugzilla anyway because there are important Rust bugs tracked in Firefox&#x27;s Bugzilla that relate to features necessary for Firefox integration (see the &quot;Depends On&quot; links at <a href="https:&#x2F;&#x2F;bugzilla.mozilla.org&#x2F;show_bug.cgi?id=1135640" rel="nofollow">https:&#x2F;&#x2F;bugzilla.mozilla.org&#x2F;show_bug.cgi?id=1135640</a> )).<p>I was actually the one to file the issue discussing migration, back in 2012: <a href="https:&#x2F;&#x2F;github.com&#x2F;rust-lang&#x2F;rust&#x2F;issues&#x2F;2865" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;rust-lang&#x2F;rust&#x2F;issues&#x2F;2865</a> .<p>We&#x27;ve generally come to terms with using Github Issues (not terrible, not great, Just Okay). We do have to spend a lot of effort on triage, but that&#x27;s true of any bug tracker (fortunately we also have Steve Klabnik, the unstoppable titan of bug triage).