EntityManagerException while running in Travis CI, Spring Boot and PostgreSQL

I made a simple web application using Spring Boot, PostgreSQL, Maven and JUnit. While running it in my IDE (mvn clear-verify) everything works perfect but while running in Travis CI I got this exception:

Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory

and a lot of others. My tests run perfect as well in IDE. Can someone tell me why? My code is here:

Entity:

@Entity
@Table(name = "contacts")
public class Contact extends BaseEntity{

    @Column(name = "name", nullable = false)
    private String name;

    public Contact() {
    }
    public Contact(String name) {
        this(null,name);
    }
    public Contact(Integer id, String name) {
        super(id);
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Contact{" +
                "id='" + id + '\'' +
                "name='" + name + '\'' +
                '}';
    }
}

Repository:

@Repository
public class ContactRepositoryImpl implements ContactRepository{

    private static final Logger LOG = LoggerFactory.getLogger(ContactRepositoryImpl.class);

    @Autowired
    private ProxyContactRepository proxyContactRepository;

    private Pattern regexPattern;

    @Override
    public List<Contact> getAllSorted(String nameFilter) {
        List<Contact> listOfAllContacts = new CopyOnWriteArrayList<>();
        try {
            regexPattern = Pattern.compile(nameFilter);
            if (!nameFilter.isEmpty() || nameFilter.length() != 0) {
                listOfAllContacts.addAll(getAll().stream().filter(contact -> notDoMatch(contact.getName())).collect(Collectors.toList()));
            } else {
                LOG.warn("Regex parameter " + "'" + nameFilter + "'" + " is empty");
                throw new NotFoundException("Regex parameter is empty");
            }
            return listOfAllContacts;
        }
        catch (PatternSyntaxException exception){
            LOG.error("Regex parameter " + "'" + nameFilter + "'" + " is invalid");
            throw new NotFoundException("Regex parameter is invalid");
        }
    }

    @Override
    public List<Contact> getAll() {
        return proxyContactRepository.findAll();
    }

    private boolean notDoMatch(String word){
        Matcher matcher = regexPattern.matcher(word);
        return !matcher.matches();
    }
}

Controller:

@RestController
@RequestMapping("/contacts")
public class ContactController extends AbstractContactController{

    @RequestMapping(method = RequestMethod.GET, params = "nameFilter")
    public List<Contact> getSortedPage(@RequestParam("nameFilter") String nameFilter){
        return super.getAllSorted(nameFilter);
    }

    @RequestMapping(method = RequestMethod.GET)
    public List<Contact> getAllPage(){
        return super.getAll();
    }
}

travis.yml

language: java
script: mvn clean verify
jdk: oraclejdk8

services:
- postgresql

before_script:
- psql -c 'create database hello;' -U postgres

And app.properties:

spring.datasource.driver-class-name=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://localhost:5432/hello
spring.datasource.username=postgres
spring.datasource.password=password

spring.jpa.hibernate.ddl-auto=validate
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL81Dialect

I checked the connection to PostgreSQL DB and it works (you can see it on picture), but I do not have Entity Manager in Test. Can somebody tell my what is it?