If I change the version to 2.1.0.Final, I'm getting the error below. Any solution works for me. I do not mind update the thorntail/swarm version.
2018-08-27 11:47:09,552 ERROR [stderr] (main) java.lang.reflect.InvocationTargetException
2018-08-27 11:47:09,552 ERROR [stderr] (main) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2018-08-27 11:47:09,552 ERROR [stderr] (main) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2018-08-27 11:47:09,552 ERROR [stderr] (main) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2018-08-27 11:47:09,553 ERROR [stderr] (main) at java.lang.reflect.Method.invoke(Method.java:498)
2018-08-27 11:47:09,553 ERROR [stderr] (main) at org.wildfly.swarm.bootstrap.MainInvoker.invoke(MainInvoker.java:53)
2018-08-27 11:47:09,553 ERROR [stderr] (main) at org.wildfly.swarm.bootstrap.Main.run(Main.java:132)
2018-08-27 11:47:09,553 ERROR [stderr] (main) at org.wildfly.swarm.bootstrap.Main.main(Main.java:85)
2018-08-27 11:47:09,554 ERROR [stderr] (main) Caused by: org.wildfly.swarm.container.DeploymentException: java.lang.IllegalStateException: Unknown tag! pos=3 poolCount = 14
2018-08-27 11:47:09,554 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:301)
2018-08-27 11:47:09,554 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:174)
2018-08-27 11:47:09,554 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:107)
2018-08-27 11:47:09,554 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer$Proxy$_$$_WeldClientProxy.deploy(Unknown Source)
2018-08-27 11:47:09,555 ERROR [stderr] (main) at org.wildfly.swarm.Swarm.deploy(Swarm.java:473)
2018-08-27 11:47:09,555 ERROR [stderr] (main) at org.wildfly.swarm.Swarm.main(Swarm.java:744)
2018-08-27 11:47:09,556 ERROR [stderr] (main) ... 7 more
2018-08-27 11:47:09,556 ERROR [stderr] (main) Caused by: java.lang.IllegalStateException: Unknown tag! pos=3 poolCount = 14
2018-08-27 11:47:09,556 ERROR [stderr] (main) at org.jboss.jandex.Indexer.processConstantPool(Indexer.java:1417)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at org.jboss.jandex.Indexer.index(Indexer.java:1451)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at io.smallrye.openapi.api.util.ArchiveUtil.indexArchive(ArchiveUtil.java:154)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at io.smallrye.openapi.api.util.ArchiveUtil.indexArchive(ArchiveUtil.java:162)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at io.smallrye.openapi.api.util.ArchiveUtil.archiveToIndex(ArchiveUtil.java:126)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at org.wildfly.swarm.microprofile.openapi.runtime.OpenApiDeploymentProcessor.<init>(OpenApiDeploymentProcessor.java:73)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2018-08-27 11:47:09,557 ERROR [stderr] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:119)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at org.jboss.weld.injection.ConstructorInjectionPoint.invokeAroundConstructCallbacks(ConstructorInjectionPoint.java:92)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:78)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at org.jboss.weld.injection.producer.AbstractInstantiator.newInstance(AbstractInstantiator.java:28)
2018-08-27 11:47:09,558 ERROR [stderr] (main) at org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:112)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:180)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.cdi.configurable.ConfigurableInjectionTarget.produce(ConfigurableInjectionTarget.java:62)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:158)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.cdi.DeploymentContextImpl.get(DeploymentContextImpl.java:64)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:99)
2018-08-27 11:47:09,559 ERROR [stderr] (main) at org.jboss.weld.bean.proxy.ProxyMethodHandler.getInstance(ProxyMethodHandler.java:125)
2018-08-27 11:47:09,560 ERROR [stderr] (main) at org.wildfly.swarm.microprofile.openapi.runtime.OpenApiDeploymentProcessor$Proxy$_$$_WeldClientProxy.process(Unknown Source)
2018-08-27 11:47:09,560 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:233)
2018-08-27 11:47:09,560 ERROR [stderr] (main) ... 12 more
2018-08-27 11:47:09,560 ERROR [stderr] (main) Exception in thread "main" java.lang.reflect.InvocationTargetException
2018-08-27 11:47:09,560 ERROR [stderr] (main) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2018-08-27 11:47:09,560 ERROR [stderr] (main) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2018-08-27 11:47:09,561 ERROR [stderr] (main) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2018-08-27 11:47:09,561 ERROR [stderr] (main) at java.lang.reflect.Method.invoke(Method.java:498)
2018-08-27 11:47:09,561 ERROR [stderr] (main) at org.wildfly.swarm.bootstrap.MainInvoker.invoke(MainInvoker.java:53)
2018-08-27 11:47:09,561 ERROR [stderr] (main) at org.wildfly.swarm.bootstrap.Main.run(Main.java:132)
2018-08-27 11:47:09,561 ERROR [stderr] (main) at org.wildfly.swarm.bootstrap.Main.main(Main.java:85)
2018-08-27 11:47:09,561 ERROR [stderr] (main) Caused by: org.wildfly.swarm.container.DeploymentException: java.lang.IllegalStateException: Unknown tag! pos=3 poolCount = 14
2018-08-27 11:47:09,561 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:301)
2018-08-27 11:47:09,562 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:174)
2018-08-27 11:47:09,562 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:107)
2018-08-27 11:47:09,562 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer$Proxy$_$$_WeldClientProxy.deploy(Unknown Source)
2018-08-27 11:47:09,564 ERROR [stderr] (main) at org.wildfly.swarm.Swarm.deploy(Swarm.java:473)
2018-08-27 11:47:09,565 ERROR [stderr] (main) at org.wildfly.swarm.Swarm.main(Swarm.java:744)
2018-08-27 11:47:09,565 ERROR [stderr] (main) ... 7 more
2018-08-27 11:47:09,569 ERROR [stderr] (main) Caused by: java.lang.IllegalStateException: Unknown tag! pos=3 poolCount = 14
2018-08-27 11:47:09,569 ERROR [stderr] (main) at org.jboss.jandex.Indexer.processConstantPool(Indexer.java:1417)
2018-08-27 11:47:09,570 ERROR [stderr] (main) at org.jboss.jandex.Indexer.index(Indexer.java:1451)
2018-08-27 11:47:09,570 ERROR [stderr] (main) at io.smallrye.openapi.api.util.ArchiveUtil.indexArchive(ArchiveUtil.java:154)
2018-08-27 11:47:09,570 ERROR [stderr] (main) at io.smallrye.openapi.api.util.ArchiveUtil.indexArchive(ArchiveUtil.java:162)
2018-08-27 11:47:09,570 ERROR [stderr] (main) at io.smallrye.openapi.api.util.ArchiveUtil.archiveToIndex(ArchiveUtil.java:126)
2018-08-27 11:47:09,570 ERROR [stderr] (main) at org.wildfly.swarm.microprofile.openapi.runtime.OpenApiDeploymentProcessor.<init>(OpenApiDeploymentProcessor.java:73)
2018-08-27 11:47:09,571 ERROR [stderr] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2018-08-27 11:47:09,571 ERROR [stderr] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
2018-08-27 11:47:09,571 ERROR [stderr] (main) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
2018-08-27 11:47:09,571 ERROR [stderr] (main) at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
2018-08-27 11:47:09,571 ERROR [stderr] (main) at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:119)
2018-08-27 11:47:09,571 ERROR [stderr] (main) at org.jboss.weld.injection.ConstructorInjectionPoint.invokeAroundConstructCallbacks(ConstructorInjectionPoint.java:92)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:78)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.jboss.weld.injection.producer.AbstractInstantiator.newInstance(AbstractInstantiator.java:28)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.jboss.weld.injection.producer.BasicInjectionTarget.produce(BasicInjectionTarget.java:112)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.jboss.weld.injection.producer.BeanInjectionTarget.produce(BeanInjectionTarget.java:180)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.cdi.configurable.ConfigurableInjectionTarget.produce(ConfigurableInjectionTarget.java:62)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:158)
2018-08-27 11:47:09,572 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.cdi.DeploymentContextImpl.get(DeploymentContextImpl.java:64)
2018-08-27 11:47:09,573 ERROR [stderr] (main) at org.jboss.weld.bean.ContextualInstanceStrategy$DefaultContextualInstanceStrategy.get(ContextualInstanceStrategy.java:100)
2018-08-27 11:47:09,573 ERROR [stderr] (main) at org.jboss.weld.bean.ContextualInstance.get(ContextualInstance.java:50)
2018-08-27 11:47:09,573 ERROR [stderr] (main) at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:99)
2018-08-27 11:47:09,573 ERROR [stderr] (main) at org.jboss.weld.bean.proxy.ProxyMethodHandler.getInstance(ProxyMethodHandler.java:125)
2018-08-27 11:47:09,573 ERROR [stderr] (main) at org.wildfly.swarm.microprofile.openapi.runtime.OpenApiDeploymentProcessor$Proxy$_$$_WeldClientProxy.process(Unknown Source)
2018-08-27 11:47:09,573 ERROR [stderr] (main) at org.wildfly.swarm.container.runtime.RuntimeDeployer.deploy(RuntimeDeployer.java:233)
2018-08-27 11:47:09,573 ERROR [stderr] (main) ... 12 more