travis matrix include must not support before_script

Author: cpsievert

.travis.yml

@@ -3,14 +3,10 @@ cache: packages
 sudo: true
 dist: trusty
 warnings_are_errors: false
-
-
 r:
   - devel
   - oldrel
   - release
-        
-      
 
 env:
   global:
@@ -30,5 +26,8 @@ before_install:
   # make sure R pkgs are upt-to-date
   - Rscript -e 'update.packages(ask = FALSE)'
 
+before_script:
+  - if [[ "$TRAVIS_R_VERSION_STRING" == "release" ]]; then docker run -e MAPBOX_TOKEN=$MAPBOX_TOKEN -v $(pwd):/home/plotly --privileged cpsievert/plotly-orca R -e "devtools::install_deps('/home/plotly', dep = T); res <- devtools::test('/home/plotly', reporter='summary'); df <- as.data.frame(res); if (sum(df\$failed) > 0 || any(df\$error)) q(status=1)"; fi
+
 # work around temporary travis + R 3.5 bug
 r_packages: devtools