Action to annul an arbitration award. Arbitration award rendered immediately after an unsuccessful conciliation hearing, without the parties having been given the opportunity to address the merits or to express their interest in the production of evidence. Limitation of the adversarial principle and of the production of evidence not provided for in the arbitration agreement or in the terms of reference. Granted. Application of Article 32, IV and VIII, of the Brazilian Arbitration Act. Violation of the principles of adversarial proceedings, full defense, and due process of law: