Currently Arquillian Spacelift uses Arquillian 1.1.4 as arquillian version but if you run in a 1.1.5, an exception is thrown. This is because both dependencies 1.14 and 1.1.5 coexists and a NoSuchMethodError exception is thrown. To avoid this you can add arquillian pom in dependency management.

<dependency>
<groupId>org.jboss.arquillian</groupId>
<artifactId>arquillian-bom</artifactId>
<version>1.1.5.Final</version>
<scope>import</scope>
<type>pom</type>
</dependency>

Related issue https://github.com/arquillian/arquillian-spacelift/issues/13