rustdoc checks to github actions

.github/workflows/rust.yml

@@ -26,6 +26,8 @@ jobs:
 
     - name: Validate formatting
       run: cargo fmt --all -- --check
+    - name: Validate documentation
+      run: cargo +stable doc --no-deps --all-features --workspace --document-private-items
     - name: Run clippy lints
       run: cargo +stable clippy --no-deps --all-features --all-targets -- -D warnings
     - name: Run tests

src/lib.rs

@@ -66,6 +66,15 @@
     html_favicon_url = "https://raw.githubusercontent.com/valence-rs/valence/main/assets/logo.svg"
 )]
 #![forbid(unsafe_code)]
+// Deny these to make CI checks fail. TODO: invalid_html_tags
+#![deny(
+    rustdoc::broken_intra_doc_links,
+    rustdoc::private_intra_doc_links,
+    rustdoc::missing_crate_level_docs,
+    rustdoc::invalid_codeblock_attributes,
+    rustdoc::invalid_rust_codeblocks,
+    rustdoc::bare_urls,
+)]
 #![warn(
     trivial_casts,
     trivial_numeric_casts,