Ensure older Docker Compose version works

.travis.yml

@@ -13,4 +13,4 @@ before_install:
 install: "pip install -r ./tools/integration-test/requirements.txt"
 script:
   # Test import
-  - py.test -x ./tools/integration-test/integration_test.py
+  - py.test -xv ./tools/integration-test/integration_test.py

src/create-extracts/create-extracts.sh

@@ -22,14 +22,14 @@ function main() {
     fi
 
     # Generate patch sources first but do not upload them
-    python create_extracts.py zoom-level "$WORLD_MBTILES" \
+    python -u create_extracts.py zoom-level "$WORLD_MBTILES" \
         --max-zoom=5 --target-dir="$EXTRACT_DIR"
-    python create_extracts.py zoom-level "$WORLD_MBTILES" \
+    python -u create_extracts.py zoom-level "$WORLD_MBTILES" \
         --max-zoom=8 --target-dir="$EXTRACT_DIR"
 
-    python create_extracts.py bbox "$WORLD_MBTILES" "$CITIES_TSV" \
+    python -u create_extracts.py bbox "$WORLD_MBTILES" "$CITIES_TSV" \
         --patch-from="$PATCH_SRC" --target-dir="$EXTRACT_DIR" $upload_flag
-    python create_extracts.py bbox "$WORLD_MBTILES" "$COUNTRIES_TSV" \
+    python -u create_extracts.py bbox "$WORLD_MBTILES" "$COUNTRIES_TSV" \
         --patch-from="$PATCH_SRC" --target-dir="$EXTRACT_DIR" $upload_flag
 }
 

tools/integration-test/integration_test.py

@@ -42,7 +42,7 @@ class DockerCompose(object):
 
     def remove_all(self):
         self.compose(['stop'])
-        self.compose(['rm', '-v', '--all', '--force'])
+        self.compose(['rm', '-v', '--force'])
 
 
 @pytest.mark.run(order=1)