Squash a few warnings that snuck in by accident

crates/cli-support/src/js/mod.rs

@@ -1701,7 +1701,7 @@ impl<'a, 'b> SubContext<'a, 'b> {
             self.generate_enum(e);
         }
         for s in self.program.structs.iter() {
-            self.generate_struct(s);
+            self.generate_struct(s)?;
         }
 
         Ok(())

tests/wasm/classes.rs

@@ -362,7 +362,7 @@ pub struct AccessFieldFoo {
 #[wasm_bindgen]
 #[derive(Copy, Clone)]
 pub struct AccessFieldBar {
-    value: u32,
+    _value: u32,
 }
 
 #[wasm_bindgen]
@@ -370,7 +370,7 @@ impl AccessFieldFoo {
     #[wasm_bindgen(constructor)]
     pub fn new() -> AccessFieldFoo {
         AccessFieldFoo {
-            bar: AccessFieldBar { value: 2 },
+            bar: AccessFieldBar { _value: 2 },
         }
     }
 }

tests/wasm/imports.rs

@@ -192,6 +192,7 @@ fn private_module_imports_work() {
     private::foo();
 }
 
+#[cfg(feature = "nightly")]
 mod private {
     use wasm_bindgen::prelude::*;