Try --no-color to avoid log output being stripped by Travis

.travis.yml

@@ -12,4 +12,5 @@ before_install:
 script:
   - sleep 3
   - curl http://localhost:8002
+  - docker-compose logs app
   - CHTSH_URL=http://localhost:8002 CHEATSH_TEST_STANDALONE=NO bash tests/run-tests.sh

tests/run-tests.sh

@@ -87,7 +87,7 @@ while read -r number test_line; do
       cat "$TMP2"
     fi
     if grep -q "Internal Server Error" "$TMP2"; then
-      [[ $TRAVIS == true ]] && docker-compose logs app
+      [[ $TRAVIS == true ]] && docker-compose logs --no-color
     fi
     echo "FAILED: [$number] $test_line"
     ((failed++))