tree ad85bd3a4c9aead72ec4eca1358e645706eca60d
parent c8802435e0a8e533b6d09e971eaa7a6d65f4e407
author aherbert <a.herbert@sussex.ac.uk> 1570639242 +0100
committer aherbert <a.herbert@sussex.ac.uk> 1570639242 +0100

Require travis 'trusty' distribution for JDK 6

See: https://docs.travis-ci.com/user/reference/trusty/#jvm-clojure-groovy-java-scala-images