LuaRocks failed on new Windows 10 image.

Winlua Release 2003c
LuaRocks 3.0.3

```
Microsoft Windows [Version 10.0.18362.720]
(c) 2019 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>luarocks install chronos
Installing https://luarocks.org/chronos-0.2-4.src.rock

Error: Could not fetch rock file: Failed creating temporary directory luarocks-rock-chronos-0.2-4: Failed setting permission exec for all
```