Increase travis composer update mem limit to -1

    So as to workaround this issue:

    [1803.3MB/30.33s] Looking at all rules.
    [1803.7MB/32.78s] [1803.8MB/34.62s] Something's changed, looking at all rules again (pass [1803.9MB/36.24s] Something's change[1804.0MB/37.85s] Something's change[1804.1MB/39.62s] Something's change[1804.1MB/41.38s] Something's change[1804.2MB/42.99s] Something's change[1804.3MB/44.62s] Something's change[1804.4MB/46.24s] Something's change[1804.5MB/47.92s] Something's change[1804.6MB/49.69s] Something's change[1804.7MB/51.42s] Something's change[1804.7MB/53.20s] Something's change[1804.8MB/54.85s] Something's change[1804.9MB/56.57s] Something's change[1805.0MB/58.22s] Something's change[1805.1MB/59.83s] Something's change[1805.2MB/62.32s] Something's change[1805.3MB/64.74s] Something's change[1805.3MB/66.65s] Something's change[1805.4MB/68.62s] Something's change[1805.5MB/70.46s] Something's change[1805.6MB/72.27s] Something's change[1805.7MB/74.92s] Something's change[1805.8MB/77.31s] Something's change[1805.8MB/79.74s] Something's change[1805.9MB/81.62s] Something's 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Author: torreytsui

.travis.yml

@@ -58,7 +58,7 @@ before_install:
   - if [ "$SYMFONY_VERSION" != "" ]; then composer require symfony/symfony:${SYMFONY_VERSION} --no-update; fi
   - export BRANCH=$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then echo $TRAVIS_BRANCH; else echo $TRAVIS_PULL_REQUEST_BRANCH; fi)
 
-install: travis_wait composer update --prefer-dist $COMPOSER_FLAGS
+install: COMPOSER_MEMORY_LIMIT=-1 travis_wait composer update --prefer-dist $COMPOSER_FLAGS
 
 script:
   - if [ "${TEST_INSTALLATION}" == true ]; then make test_installation; else make test; fi