ci: copy from eframe_template

Author: c-git

.github/workflows/rust.yml

@@ -7,10 +7,11 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  # This is required to enable the web_sys clipboard API which egui_web uses
+  # --cfg=web_sys_unstable_apis is required to enable the web_sys clipboard API which egui_web uses
   # https://rustwasm.github.io/wasm-bindgen/api/web_sys/struct.Clipboard.html
   # https://rustwasm.github.io/docs/wasm-bindgen/web-sys/unstable-apis.html
-  RUSTFLAGS: --cfg=web_sys_unstable_apis
+  RUSTFLAGS: -D warnings --cfg=web_sys_unstable_apis
+  RUSTDOCFLAGS: -D warnings
 
 jobs:
   check: