snprintf(mailbox,79, "worker-%ld", id);
snprintf(mailbox,79, "worker-%ld", id);
msg_task_t task = NULL;
int res = MSG_task_receive(&task, mailbox);
xbt_assert(res == MSG_OK, "MSG_task_get failed");
msg_task_t task = NULL;
int res = MSG_task_receive(&task, mailbox);
xbt_assert(res == MSG_OK, "MSG_task_get failed");