.travis.yml: test jobs 12-15
diff --git a/.travis.yml b/.travis.yml
index 35b25c0..9f13272 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,10 +8,6 @@
 
 
     # Container-based Ubuntu 12.04 LTS Server Edition 64 bit (doesn't support 32-bit includes)
-    - env: Ubu=12.04cont Cmd="make test && make clean && make travis-install"
-      os: linux
-      sudo: false
-
     - env: Ubu=12.04cont Cmd="make zlibwrapper && make clean && make -C tests test-symbols && make clean && make -C tests test-zstd-nolegacy && make clean && make cmaketest && make clean && make -C contrib/pzstd googletest pzstd tests check && make -C contrib/pzstd clean"
       os: linux
       sudo: false
@@ -156,7 +152,12 @@
             - gcc-6
             - gcc-6-multilib
 
+    # Container-based Ubuntu 12.04 LTS Server Edition 64 bit (doesn't support 32-bit includes)
+    - env: Ubu=12.04cont Cmd="make test && make clean && make travis-install"
+      os: linux
+      sudo: false
+
 script:
   - JOB_NUMBER=$(echo $TRAVIS_JOB_NUMBER | sed -e 's:[0-9][0-9]*\.\(.*\):\1:')
   # - if [ $JOB_NUMBER -eq 9 ] || [ $JOB_NUMBER -eq 10 ]; then sh -c "$Cmd"; fi
-  - if [ "$TRAVIS_PULL_REQUEST" = "true" ] || [ "$TRAVIS_BRANCH" = "master" ] || [ "$TRAVIS_BRANCH" = "dev" ] || [ $JOB_NUMBER -eq 9 ]; then sh -c "$Cmd"; fi
+  - if [ "$TRAVIS_PULL_REQUEST" = "true" ] || [ "$TRAVIS_BRANCH" = "master" ] || [ "$TRAVIS_BRANCH" = "dev" ] || [ $JOB_NUMBER -gt 11 ]; then sh -c "$Cmd"; fi