diff --git a/.travis.yml b/.travis.yml
index 21beb54869..4a1a6980e1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -224,7 +224,7 @@ install:
           SYMFONY_VERSION=$(git ls-remote --heads | grep -o '/[1-9].*' | tail -n 1 | sed s/.//) &&
           git fetch --depth=2 origin $SYMFONY_VERSION &&
           git checkout -m FETCH_HEAD &&
-          COMPONENTS=$(find src/Symfony -mindepth 2 -type f -name phpunit.xml.dist -printf '%h\n' | sort)
+          export COMPONENTS=$(find src/Symfony -mindepth 2 -type f -name phpunit.xml.dist -printf '%h\n' | sort)
       else
           SYMFONY_VERSION=$(cat composer.json | grep '^ *"dev-master". *"[1-9]' | grep -o '[0-9.]*')
       fi
@@ -232,7 +232,7 @@ install:
     - |
       # Skip the phpunit-bridge on not-master branches when $deps is empty
       if [[ ! $deps && $TRAVIS_BRANCH != master ]]; then
-          COMPONENTS=$(find src/Symfony -mindepth 3 -type f -name phpunit.xml.dist -not -wholename '*/Bridge/PhpUnit/*' -printf '%h\n' | sort)
+          export COMPONENTS=$(find src/Symfony -mindepth 3 -type f -name phpunit.xml.dist -not -wholename '*/Bridge/PhpUnit/*' -printf '%h\n' | sort)
       fi
 
     - |
@@ -246,7 +246,7 @@ install:
 
     - |
       # Legacy tests are skipped when deps=high and when the current branch version has not the same major version number as the next one
-      [[ $deps = high && ${SYMFONY_VERSION%.*} != $(git show $(git ls-remote --heads | grep -FA1 /$SYMFONY_VERSION | tail -n 1):composer.json | grep '^ *"dev-master". *"[1-9]' | grep -o '[0-9]*' | head -n 1) ]] && LEGACY=,legacy
+      [[ $deps = high && ${SYMFONY_VERSION%.*} != $(git show $(git ls-remote --heads | grep -FA1 /$SYMFONY_VERSION | tail -n 1):composer.json | grep '^ *"dev-master". *"[1-9]' | grep -o '[0-9]*' | head -n 1) ]] && export LEGACY=,legacy
 
       export COMPOSER_ROOT_VERSION=$SYMFONY_VERSION.x-dev
       if [[ $deps ]]; then mv composer.json.phpunit composer.json; fi
@@ -259,7 +259,7 @@ install:
           export PHP=$1
           if [[ $PHP != 7.4* && $PHP != $TRAVIS_PHP_VERSION && $TRAVIS_PULL_REQUEST != false ]]; then
               echo -e "\\n\\e[33;1mIntermediate PHP version $PHP is skipped for pull requests.\\e[0m"
-              break
+              return
           fi
           phpenv global $PHP
           ([[ $deps ]] && cd src/Symfony/Component/HttpFoundation; cp composer.json composer.bak; composer config platform.ext-mongodb 1.6.0; composer require --dev --no-update mongodb/mongodb)
@@ -311,10 +311,7 @@ install:
               fi
           fi
       }
+      export -f run_tests
 
 script:
-    - for PHP in $TRAVIS_PHP_VERSION $php_extra; do
-          (run_tests $PHP) || X=1;
-      done
-
-      [[ ! $X ]] || (exit 1)
+    echo $TRAVIS_PHP_VERSION $php_extra | xargs -n1 bash -c '(</dev/tty run_tests $0)' || false