Set Guava version to 19 in vertx-web-api-contract - fixes
<artifactId>swagger-parser</artifactId>
<version>2.0.0-rc3</version>
</dependency>
+ <!-- Force to 19.0 as that's the stack version -->
+ <dependency>
+ <groupId>com.google.guava</groupId>
+ <artifactId>guava</artifactId>
+ <version>19.0</version>
+ </dependency>
<dependency>
<groupId>io.vertx</groupId>
