error: methods called `new` usually return `Self`
  --> $DIR/new_ret_no_self.rs:51:5
   |
51 | /     pub fn new(_: String) -> impl R<Item = u32> {
52 | |         S3
53 | |     }
   | |_____^
   |
   = note: `-D clippy::new-ret-no-self` implied by `-D warnings`

error: methods called `new` usually return `Self`
  --> $DIR/new_ret_no_self.rs:83:5
   |
83 | /     pub fn new() -> u32 {
84 | |         unimplemented!();
85 | |     }
   | |_____^

error: methods called `new` usually return `Self`
  --> $DIR/new_ret_no_self.rs:92:5
   |
92 | /     pub fn new(_: String) -> u32 {
93 | |         unimplemented!();
94 | |     }
   | |_____^

error: aborting due to 3 previous errors