Spring message appears several times during the test run - spring-boot

Question

I am currently using spring-boot with the org.testcontainers library to pass test in docker . But I noticed that the following message appears several times :
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.20.RELEASE)
It appears up to 4 times , 2 of them with the following message :
11:33:23.733 [main] INFO org.springframework.web.context.support.GenericWebApplicationContext - Refreshing org.springframework.web.context.support.GenericWebApplicationContext#13ffeba4: startup date [Wed Jun 16 11:33:23 CEST 2021]; root of context hierarchy
Some messages that have caught my attention, first time that appears (the only one I think necessary)
11:31:48.515 [main] INFO org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer - Tomcat initialized with port(s): 0 (http)
11:31:49.019 [localhost-startStop-1] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 5416 ms
2 : It does not appear Why?
3:
11:35:06.738 [main] INFO org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer - Tomcat initialized with port(s): 0 (http)
11:35:06.764 [localhost-startStop-1] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 1569 ms
4:
11:36:19.343 [main] INFO org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer - Tomcat initialized with port(s): 0 (http)
11:36:19.362 [localhost-startStop-1] INFO org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 454 ms
The message always pops up after a specific test, for example the third time during this test.
#Category(OneTest.class)
public class PasswordEncryptionTest
{
#Test
public void passwordEncryptionTest()
{
PasswordEncryption passwordEncryption = new PasswordEncryption();
try
{
String password = "passwordExample";
String encrypted = passwordEncryption.encryptPassword(password.toCharArray());
String decrypted = passwordEncryption.decryptPassword(encrypted.toCharArray());
assertEquals(password, decrypted);
}
catch (PasswordDecryptionException e)
{
e.printStackTrace();
fail(e.getMessage());
}
}
}
Is this normal ? Because it is the message that appears when you start the application and that it appears 4 times, that is what I noticed.
Can it be affecting the performance of the tests?
Pd: They are messages, after passing the tests many times, in different environments, they are not the result of chance. I have seen no relationship in the times between the different appearances. (It does not follow a time pattern)
spring-boot 1.5.20
junit47
org.testcontainers 1.13.0
Docker windows 2.2.0.3