refactor musl tool doctor

src/SPC/store/Downloader.php

@@ -261,10 +261,13 @@ class Downloader
 
         if ($source === null) {
             logger()->warning('Source {name} unknown. Skipping.', ['name' => $name]);
-
             return;
         }
 
+        if (!is_dir(DOWNLOAD_PATH)) {
+            FileSystem::createDir(DOWNLOAD_PATH);
+        }
+
         // load lock file
         if (!file_exists(DOWNLOAD_PATH . '/.lock.json')) {
             $lock = [];

src/SPC/store/FileSystem.php

@@ -152,6 +152,9 @@ class FileSystem
         if (self::$_extract_hook === []) {
             SourcePatcher::init();
         }
+        if (!is_dir(SOURCE_PATH)) {
+            self::createDir(SOURCE_PATH);
+        }
         if ($move_path !== null) {
             $move_path = SOURCE_PATH . '/' . $move_path;
         }