HibernateException only on TravisCI build

I’m using the Travis CI for only build my Spring application, and after I developed my integration tests a weird problem started. Only on Travis CI environment, I’m having this exception when the tests are running:

> Task :contract:compileTestJava
> Task :contract:processTestResources
> Task :contract:testClasses
Download https://repo.maven.apache.org/maven2/org/jacoco/org.jacoco.agent/0.8.1/org.jacoco.agent-0.8.1.pom
Download https://repo.maven.apache.org/maven2/org/jacoco/org.jacoco.build/0.8.1/org.jacoco.build-0.8.1.pom
Download https://repo.maven.apache.org/maven2/org/jacoco/org.jacoco.agent/0.8.1/org.jacoco.agent-0.8.1.jar
> Task :contract:test
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils$1 (file:/home/travis/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.0.7.RELEASE/54b731178d81e66eca9623df772ff32718208137/spring-core-5.0.7.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
com.valandro.contract.AuthControllerTest > authenticate_success FAILED
    java.lang.IllegalStateException
        Caused by: org.springframework.beans.factory.BeanCreationException
            Caused by: org.hibernate.service.spi.ServiceException
                Caused by: org.hibernate.HibernateException
com.valandro.contract.AuthControllerTest > authenticate_not_found FAILED
    java.lang.IllegalStateException
        Caused by: org.springframework.beans.factory.BeanCreationException
            Caused by: org.hibernate.service.spi.ServiceException
                Caused by: org.hibernate.HibernateException
22 tests completed, 2 failed
> Task :contract:test FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':contract:test'.
> There were failing tests. See the report at: file:///home/travis/build/valandro/java-auth-spring/contract/build/reports/tests/test/index.html
* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':contract:test'.
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:110)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:77)
	at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
	at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
	at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
	at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
	at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
	at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
	...

I think that could be happing because some dependencies are been downloaded together with the ./gradlew check task. Is anyone have an idea why that could be happening?

Note: On my local project I couldn’t reproduce the error, all tests run good.