diff --git a/.github/workflows/rust-warnings.yml b/.github/workflows/rust-warnings.yml
index 98ddfead5c8522..3ab095e8999ba3 100644
--- a/.github/workflows/rust-warnings.yml
+++ b/.github/workflows/rust-warnings.yml
@@ -21,7 +21,7 @@ permissions:
   contents: read
 
 jobs:
-  make:
+  rust-warnings:
     env:
       GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
 
@@ -46,6 +46,15 @@ jobs:
         run: |
           set -eu
           cargo check --quiet --all-features --message-format=json \
-            | jq -r 'select(.message.level == "warning" or .message.level == "error") | .message.rendered' \
+            | jq -r 'select(.message.level | IN("warning", "error")) | .message.rendered' \
+            | tee messages.txt
+          (exit "${PIPESTATUS[0]}") && ! grep --quiet '[^[:space:]]' messages.txt
+
+      - name: "📜 `rustdoc` warnings"
+        shell: bash
+        run: |
+          set -eu
+          cargo doc --document-private-items --all --no-deps --message-format=json \
+            | jq -r 'select(.message.level | IN("warning", "error")) | .message.rendered' \
             | tee messages.txt
           (exit "${PIPESTATUS[0]}") && ! grep --quiet '[^[:space:]]' messages.txt
diff --git a/ext/erb/escape/escape.c b/ext/erb/escape/escape.c
index a46fe236c0f952..9437e9694eda5f 100644
--- a/ext/erb/escape/escape.c
+++ b/ext/erb/escape/escape.c
@@ -49,7 +49,7 @@ optimized_escape_html(VALUE str)
         const unsigned char c = *cstr++;
         uint8_t len = html_escape_table[c].len;
         if (len) {
-            uint16_t segment_len = cstr - segment_start - 1;
+            size_t segment_len = cstr - segment_start - 1;
             if (!buf) {
                 buf = ALLOCV_N(char, vbuf, escaped_length(str));
                 dest = buf;
@@ -64,7 +64,7 @@ optimized_escape_html(VALUE str)
         }
     }
     if (buf) {
-        uint16_t segment_len = cstr - segment_start;
+        size_t segment_len = cstr - segment_start;
         if (segment_len) {
             memcpy(dest, segment_start, segment_len);
             dest += segment_len;
diff --git a/test/erb/test_erb.rb b/test/erb/test_erb.rb
index 24f6cc5d8944e0..c0df690ccebe97 100644
--- a/test/erb/test_erb.rb
+++ b/test/erb/test_erb.rb
@@ -77,6 +77,9 @@ def test_html_escape
 
     assert_equal("", ERB::Util.html_escape(nil))
     assert_equal("123", ERB::Util.html_escape(123))
+
+    assert_equal(65536+5, ERB::Util.html_escape("x"*65536 + "&").size)
+    assert_equal(65536+5, ERB::Util.html_escape("&" + "x"*65536).size)
   end
 
   def test_html_escape_to_s
diff --git a/yjit/src/stats.rs b/yjit/src/stats.rs
index b63e1c3272e356..a53d23435b49a7 100644
--- a/yjit/src/stats.rs
+++ b/yjit/src/stats.rs
@@ -917,6 +917,7 @@ pub extern "C" fn rb_yjit_record_exit_stack(exit_pc: *const VALUE)
     // rb_vm_insn_addr2opcode won't work in cargo test --all-features
     // because it's a C function. Without insn call, this function is useless
     // so wrap the whole thing in a not test check.
+    let _ = exit_pc;
     #[cfg(not(test))]
     {
         // Get the opcode from the encoded insn handler at this PC
diff --git a/yjit/src/virtualmem.rs b/yjit/src/virtualmem.rs
index 58c9d9a7fd380a..9126cf300e307d 100644
--- a/yjit/src/virtualmem.rs
+++ b/yjit/src/virtualmem.rs
@@ -46,7 +46,7 @@ pub struct VirtualMemory<A: Allocator> {
 /// Mutable parts of [`VirtualMemory`].
 pub struct VirtualMemoryMut<A: Allocator> {
     /// Number of bytes that have we have allocated physical memory for starting at
-    /// [Self::region_start].
+    /// [VirtualMemory::region_start].
     mapped_region_bytes: usize,
 
     /// Keep track of the address of the last written to page.
diff --git a/zjit/src/codegen.rs b/zjit/src/codegen.rs
index 08df10c100a3d8..262a0361b4a74e 100644
--- a/zjit/src/codegen.rs
+++ b/zjit/src/codegen.rs
@@ -1242,7 +1242,7 @@ fn gen_new_array(
     new_array
 }
 
-/// Compile array access (array[index])
+/// Compile array access (`array[index]`)
 fn gen_aref_fixnum(
     asm: &mut Assembler,
     array: Opnd,
diff --git a/zjit/src/gc.rs b/zjit/src/gc.rs
index 934e1e8dcad165..baa0926c515189 100644
--- a/zjit/src/gc.rs
+++ b/zjit/src/gc.rs
@@ -262,7 +262,7 @@ fn ranges_overlap<T>(left: &Range<T>, right: &Range<T>) -> bool where T: Partial
     left.start < right.end && right.start < left.end
 }
 
-/// Callback for marking GC objects inside [Invariants].
+/// Callback for marking GC objects inside [crate::invariants::Invariants].
 #[unsafe(no_mangle)]
 pub extern "C" fn rb_zjit_root_mark() {
     gc_mark_raw_samples();