call_user_func(new RepoCallback($this->github), $repo, $links);
$this->github->listReleases($repo->full_name, null, function($releases) use($repo) {
call_user_func(new RepoCallback($this->github), $repo, $links);
$this->github->listReleases($repo->full_name, null, function($releases) use($repo) {