error[E0277]: the trait bound `(): Project` is not satisfied --> $DIR/bad-projection.rs:14:17 | LL | pub fn uwu() -> <() as Project>::Assoc {} | ^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()` | help: this trait has no implementations, consider adding one --> $DIR/bad-projection.rs:9:1 | LL | trait Project { | ^^^^^^^^^^^^^ error[E0593]: function is expected to take 1 argument, but it takes 0 arguments --> $DIR/bad-projection.rs:14:1 | LL | pub fn uwu() -> <() as Project>::Assoc {} | --------------------------------------^^^ | | | expected function that takes 1 argument | takes 0 arguments | required by a bound introduced by this call | note: required by a bound in `ProcMacro::bang` --> $SRC_DIR/proc_macro/src/bridge/client.rs:LL:COL error[E0277]: the trait bound `(): Project` is not satisfied --> $DIR/bad-projection.rs:14:1 | LL | pub fn uwu() -> <() as Project>::Assoc {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()` | help: this trait has no implementations, consider adding one --> $DIR/bad-projection.rs:9:1 | LL | trait Project { | ^^^^^^^^^^^^^ error[E0277]: the trait bound `(): Project` is not satisfied --> $DIR/bad-projection.rs:14:1 | LL | pub fn uwu() -> <() as Project>::Assoc {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()` | help: this trait has no implementations, consider adding one --> $DIR/bad-projection.rs:9:1 | LL | trait Project { | ^^^^^^^^^^^^^ error[E0277]: the trait bound `(): Project` is not satisfied --> $DIR/bad-projection.rs:14:40 | LL | pub fn uwu() -> <() as Project>::Assoc {} | ^^ the trait `Project` is not implemented for `()` | help: this trait has no implementations, consider adding one --> $DIR/bad-projection.rs:9:1 | LL | trait Project { | ^^^^^^^^^^^^^ error: aborting due to 5 previous errors Some errors have detailed explanations: E0277, E0593. For more information about an error, try `rustc --explain E0277`.