Fix non-compliling examples (#2624)

* Fix non-compliling examples

* Add CI job to run cargo check (to ensure examples don't break in the future)

azure-pipelines.yml

@@ -11,6 +11,12 @@ jobs:
       - template: ci/azure-install-rust.yml
       - script: cargo fmt --all -- --check
 
+  - job: cargo_check
+    displayName: "Run cargo check"
+    steps:
+      - template: ci/azure-install-rust.yml
+      - script: cargo check --all
+
   - job: test_wasm_bindgen
     displayName: "Run wasm-bindgen crate tests (unix)"
     steps:

examples/guide-supported-types-examples/Cargo.toml

@@ -9,3 +9,4 @@ crate-type = ["cdylib"]
 
 [dependencies]
 wasm-bindgen = "0.2.74"
+js-sys = "0.3.51"

examples/guide-supported-types-examples/src/imported_types.rs

@@ -1,13 +1,15 @@
 use wasm_bindgen::prelude::*;
 
 #[wasm_bindgen]
+#[derive(Copy, Clone, Debug)]
 pub enum NumberEnum {
     Foo = 0,
     Bar = 1,
     Qux = 2,
 }
 
 #[wasm_bindgen]
+#[derive(Copy, Clone, Debug)]
 pub enum StringEnum {
     Foo = "foo",
     Bar = "bar",

examples/webxr/src/lib.rs

@@ -1,3 +1,5 @@
+#![cfg(web_sys_unstable_apis)]
+
 #[macro_use]
 mod utils;