Couchbase crash

<?php

$data = ['a' => 'b', 'c' => ['d' => 'e']];

$cluster = new \CouchbaseCluster('couchbase://127.0.0.1');

$bucket = $cluster->openBucket('default');

$bucket->setTranscoder(function($value) {
  throw new \Exception();
  return array(serialize($value), 0, 0);
}, function($value, $flags, $datatype) {
  return unserialize($value);
});

$bucket->upsert('cid', $data);

$info = $bucket->get('cid', $data);

$a = 0;