error[E0407]: method `new` is not a member of trait `ToString_`
  --> $DIR/issue-3973.rs:11:5
   |
LL | /     fn new(x: f64, y: f64) -> Point {
LL | |     //~^ ERROR method `new` is not a member of trait `ToString_`
LL | |         Point { x: x, y: y }
LL | |     }
   | |_____^ not a member of trait `ToString_`

error[E0599]: no function or associated item named `new` found for type `Point` in the current scope
  --> $DIR/issue-3973.rs:22:20
   |
LL | struct Point {
   | ------------ function or associated item `new` not found for this
...
LL |     let p = Point::new(0.0, 0.0);
   |             -------^^^
   |             |
   |             function or associated item not found in `Point`

error: aborting due to 2 previous errors

Some errors occurred: E0407, E0599.
For more information about an error, try `rustc --explain E0407`.