$wgMemc->merge( $key, function ( $cache, $key, $lastRuns ) use ( $tasksRun ) {
if ( is_array( $lastRuns ) ) {
foreach ( $tasksRun as $type => $tasks ) {
$wgMemc->merge( $key, function ( $cache, $key, $lastRuns ) use ( $tasksRun ) {
if ( is_array( $lastRuns ) ) {
foreach ( $tasksRun as $type => $tasks ) {