It's kind of a terrible message, I wish it would change to something more informative.
As of https://github.com/dlang/dmd/pull/15430, there's a new message:
```accessing non-static variable `freeSize` requires an instance of type `Stats`
```
It's kind of a terrible message, I wish it would change to something more informative.
As of https://github.com/dlang/dmd/pull/15430, there's a new message:
```accessing non-static variable `freeSize` requires an instance of type `Stats`
```