error: the start function cannot have arguments
 --> $DIR/start-function.rs:7:13
  |
7 | pub fn foo2(x: u32) {}
  |             ^^^^^^

error: the start function cannot have generics
  --> $DIR/start-function.rs:10:12
   |
10 | pub fn foo3<T>() {}
   |            ^^^

error: could not compile `wasm-bindgen-macro-tests`.