[travis check new boards] Move script into the before_script section

.travis.yml

@@ -71,6 +71,9 @@ before_script:
   - function var_search () { case "$1" in *$2*) true;; *) false;; esac; }
   - sudo dpkg --add-architecture i386
 
+  # Check if there's any board missing in TRAVIS_BOARDS
+  - cd tools && python3 -u travis_new_boards_check.py
+  - cd ..
 
   - (! var_search "${TRAVIS_SDK-}" arm || (wget https://s3.amazonaws.com/adafruit-circuit-python/gcc-arm-embedded_7-2018q2-1~xenial1_amd64.deb && sudo dpkg -i gcc-arm-embedded*_amd64.deb))
 
@@ -103,10 +106,6 @@ script:
   - cd tools && python3 -u build_release_files.py
   - cd ..
 
-  # Check if there's any board missing in TRAVIS_BOARDS
-  - cd tools && python3 -u travis_new_boards_check.py
-  - cd ..
-
   - echo 'Building unix' && echo 'travis_fold:start:unix'
   - (! var_search "${TRAVIS_TESTS-}" unix || (make -C ports/unix deplibs -j2 && make -C ports/unix -j2 && make -C ports/unix coverage -j2)) ; S=$? ; echo $S > status ; (exit $S)
   - echo 'travis_fold:end:unix' && tools/print_status.py status