make curl fail on errors

bin/compile

@@ -60,12 +60,12 @@ rm -rf $buildpack; mkdir -p $buildpack;
 case $BUILDPACK_URL in
   *.json)
     buildpack_manifest=$(mktemp -t buildpack_manifest_XXXXX)
-    curl -s $BUILDPACK_URL -o $buildpack_manifest
+    curl -f -s $BUILDPACK_URL -o $buildpack_manifest
     $root_dir/bin/download_manifest $buildpack_manifest $buildpack >/dev/null 2>&1
     ;;
   *.tgz)
     cd $buildpack
-    curl -s $BUILDPACK_URL -o- | tar xzf -
+    curl -f -s $BUILDPACK_URL -o- | tar xzf -
     cd - >/dev/null 2>&1
     ;;
   *.git)
@@ -81,7 +81,7 @@ case $BUILDPACK_URL in
   *.sh|*.txt)
     compile_script=$(mktemp -t compile_script_XXXXX)
     cp -r $root_dir/data/buildpack-custom/* $buildpack/
-    curl -L -s $BUILDPACK_URL -o $buildpack/bin/script
+    curl -f -L -s $BUILDPACK_URL -o $buildpack/bin/script
     chmod +x $buildpack/bin/script
     ;;
   *)
@@ -102,7 +102,7 @@ buildpack_name=$($buildpack/bin/detect "$compile_dir") \
 if [ "$CACHE_URL" != "" ]; then
   echo -n "Fetching cache... "
   cache=$(mktemp -t cache_XXXXX)
-  curl -s $CACHE_URL -o $cache
+  curl -f -s $CACHE_URL -o $cache
   cd $cache_dir
   tar xzf $cache >/dev/null 2>&1 && echo "done" || echo "empty"
   cd .
@@ -154,7 +154,7 @@ if [ "$CACHE_URL" != "" ]; then
   cd $cache_dir
   tar czf $cache . >/dev/null 2>&1
   cd .
-  code=$(curl -s -X PUT $CACHE_URL -F data=@$cache --write-out %{http_code} --silent --output /dev/null)
+  code=$(curl -f -s -X PUT $CACHE_URL -F data=@$cache --write-out %{http_code} --silent --output /dev/null)
   if [ "$code" == "200" ]; then
     echo "done"
   else

bin/fetch

@@ -35,7 +35,7 @@ echo -n "Preparing app for compilation... " >&2
 case $source_url in
   *.json)
     manifest=$(mktemp -t manifest_XXXXX)
-    curl -Ls $source_url -o $manifest
+    curl -f -Ls $source_url -o $manifest
     $root_dir/bin/download_manifest $manifest $compile_dir >/dev/null
     ;;
   *.git)
@@ -51,21 +51,21 @@ case $source_url in
     ;;
   *.tar.gz|*.tgz)
     tarball=$(mktemp -t tarball_XXXXX)
-    curl -Ls $source_url -o $tarball
+    curl -f -Ls $source_url -o $tarball
     cd $compile_dir >/dev/null 2>&1
     tar xzf $tarball
     cd - >/dev/null 2>&1
     ;;
   *.tar.bz2|*.tbz|*.tbz2)
     tarball=$(mktemp -t tarball_XXXXX)
-    curl -Ls $source_url -o $tarball
+    curl -f -Ls $source_url -o $tarball
     cd $compile_dir >/dev/null 2>&1
     tar xjf $tarball
     cd - >/dev/null 2>&1
     ;;
   *.war)
     war=$(mktemp -t war_XXXXX)
-    curl -Ls $source_url -o $war
+    curl -f -Ls $source_url -o $war
     cd $compile_dir >/dev/null 2>&1
     jar xf $war
     cd - >/dev/null 2>&1

bin/stow

@@ -33,7 +33,7 @@ if [ "$SLUG_PUT_URL" != "" ]; then
   echo "done"
 
   echo -n "Uploading slug... "
-  curl -s -T $slug "$SLUG_PUT_URL"
+  curl -f -s -T $slug "$SLUG_PUT_URL"
   echo "done"
 
   echo "Success, slug is ${SLUG_URL}"