Tests should run in parallel without warnings or errors, similar to sequential execution. In WorkerCrashedException.php line 41: The test "PARATEST='1' TEST_TOKEN='10 ...
On line 661 of file program/lib/Roundcube/rcube_imap.php the test $vendor = (string) (!empty($ident) ? $ident['name'] : ''); returns Undefined array key "name" Here ...