travis: update to trusty for CMake version

diff --git a/.travis.yml b/.travis.yml
index e504f2e..dd17eba 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,7 @@ install:
   - ./travis_install.sh
 script:
   - if [ "$COVERITY_SCAN_BRANCH" != 1 ]; then mkdir build && cd build && cmake $CMAKE_ARGS .. && cmake --build .; fi
+dist: trusty
 addons:
   coverity_scan:
     project: