The embedded tomcat container (tested with version 7) does not cleanup temporary files after test execution - the temp folder is full of tomcat-embedded-***.tmp files. Similar issue was already reported for Glassfish - ARQ-923 that has already been resolved, but I guess nobody fixed the other containers. Looking at the source code of Glassfish, Tomcat and JBoss only the Glassfish one does setup deletion of the temp file within the setup() method:

• https://github.com/arquillian/arquillian-container-glassfish/blob/master/glassfish-embedded-3.1/src/main/java/org/jboss/arquillian/container/glassfish/embedded_3_1/GlassFishContainer.java
• https://github.com/arquillian/arquillian-container-tomcat/blob/master/tomcat-embedded-7/src/main/java/org/jboss/arquillian/container/tomcat/embedded/Tomcat7EmbeddedContainer.java
• https://github.com/arquillian/arquillian-container-jbossas/blob/master/jbossas-embedded-6/src/main/java/org/jboss/arquillian/container/jbossas/embedded_6/JBossASEmbeddedContainer.java