As an experiment moved the coverity_scan code into the linux addons: block

.travis.yml

@@ -30,17 +30,6 @@ matrix:
             #- clang-3.8
             - g++
             - cmake
-    # OSX build
-    - os: osx
-      language: cpp
-
-script:
-   - mkdir build
-   - cd build
-   - travis_wait 60 cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../product -DBUILD_OSG_EXAMPLES=ON ..
-   - make install -j 3
-
-addons:
         coverity_scan:
 
             # GitHub project metadata
@@ -48,7 +37,7 @@ addons:
             project:
             name: "openscenegraph/osg"
             description: "OpenSceneGraph"
-      version: 3.5
+            version: 3.5.x
 
             # Where email notification of build analysis results will be sent
             notification_email: robert@openscenegraph.com
@@ -65,3 +54,13 @@ addons:
             # Take care in resource usage, and consider the build frequency allowances per
             #   https://scan.coverity.com/faq#frequency
             branch_pattern: coverity_scan
+
+    # OSX build
+    - os: osx
+      language: cpp
+
+script:
+   - mkdir build
+   - cd build
+   - travis_wait 60 cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../product -DBUILD_OSG_EXAMPLES=ON ..
+   - make install -j 3