E113: That syntax used to exist, but doesn't any more

Turf changed. The form you wrote was valid in an earlier version, and now it is an error with a pointer to what replaced it. The message says which.

Struct creation moved from a brace literal to a call:

mut p: Point = Point { x: 1, y: 2 };      // removedmut p: Point = Point::new(1, 2);          // a struct with a constructormut p: Point = Point::default();          // every field zeroed

Static methods moved from :: in the declaration to a static marker on the method:

fn Point::origin(): Point { ... }         // removedfn Point.origin() static: Point { ... }

If you are following an old tutorial or an example you found online, this is the usual cause: the example predates the change.

Run turf --explain E113 in a terminal to read this again.