handle fail in tmpdir creation

dotdrop/utils.py

@@ -102,6 +102,7 @@ def get_tmpdir():
 
 def _get_tmpdir():
     """create the tmpdir"""
+    try:
         if ENV_TEMP in os.environ:
             t = os.environ[ENV_TEMP]
             t = os.path.expanduser(t)
@@ -109,6 +110,8 @@ def _get_tmpdir():
             t = os.path.normpath(t)
             os.makedirs(t, exist_ok=True)
             return t
+    except Exception:
+        pass
     return tempfile.mkdtemp(prefix='dotdrop-')