Swarm doesn't terminate after database connection error during deployment

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>test</groupId>
    <artifactId>test</artifactId>
    <version>1</version>
    <packaging>war</packaging>

    <properties>
        <version.swarm>2017.10.1</version.swarm>
        <failOnMissingWebXml>false</failOnMissingWebXml>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.wildfly.swarm</groupId>
            <artifactId>batch-jberet</artifactId>
            <version>${version.swarm}</version>
        </dependency>
        <dependency>
            <groupId>org.wildfly.swarm</groupId>
            <artifactId>undertow</artifactId>
            <version>${version.swarm}</version>
        </dependency>
        <dependency>
            <groupId>org.wildfly.swarm</groupId>
            <artifactId>jaxrs</artifactId>
            <version>${version.swarm}</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>6.0.6</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.wildfly.swarm</groupId>
                <artifactId>wildfly-swarm-plugin</artifactId>
                <version>${version.swarm}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>package</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

project-defaults.yml

# Put this file under src/main/resources

swarm:
  batch-jberet:
    default-job-repository: myRepo
    jdbc-job-repositories:
      myRepo:
        data-source: ExampleDS
    default-thread-pool: myTP
    thread-pools:
      myTP:
        max-threads: 10
        keepalive-time: 30

  datasources:
    data-sources:
      ExampleDS:
        jndi-name: java:jboss/datasources/ExampleDS
        connection-url: jdbc:mysql://non-existent/database
        driver-name: mysql