Hello, I'm having trouble when using `resource.setrlimit` on macOS.

```
import resource
resource.setrlimit(resource.RLIMIT_STACK, resource.getrlimit(resource.RLIMIT_STACK))
```

Running this code gives the following error:

```
Traceback (most recent call last):
  File "main.py", line 2, in <module>
    resource.setrlimit(resource.RLIMIT_STACK, resource.getrlimit(resource.RLIMIT_STACK))
ValueError: current limit exceeds maximum limit
```

I ran the same code in my linux environment and it worked.

* macOS Catalina 10.15.4 (19E287)
* `python --version` : Python 3.7.7

Thanks.