error: methods called `new` usually return `Self`
  --> $DIR/new_ret_no_self.rs:49:5
   |
49 | /     pub fn new(_: String) -> impl R<Item = u32> {
50 | |         S3
51 | |     }
   | |_____^
   |
   = note: `-D clippy::new-ret-no-self` implied by `-D warnings`

error: methods called `new` usually return `Self`
  --> $DIR/new_ret_no_self.rs:81:5
   |
81 | /     pub fn new() -> u32 {
82 | |         unimplemented!();
83 | |     }
   | |_____^

error: methods called `new` usually return `Self`
  --> $DIR/new_ret_no_self.rs:90:5
   |
90 | /     pub fn new(_: String) -> u32 {
91 | |         unimplemented!();
92 | |     }
   | |_____^

error: aborting due to 3 previous errors