diff --git a/.sqlx/query-aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42.json b/.sqlx/query-aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42.json
new file mode 100644
index 000000000..d6ea91543
--- /dev/null
+++ b/.sqlx/query-aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42.json
@@ -0,0 +1,26 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "SELECT cov.total_items\n                    FROM\n                        crates as c\n                        INNER JOIN releases AS r ON c.id = r.crate_id\n                        LEFT OUTER JOIN doc_coverage AS cov ON r.id = cov.release_id\n                ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "total_items",
+        "type_info": "Int4",
+        "origin": {
+          "Table": {
+            "table": "doc_coverage",
+            "name": "total_items"
+          }
+        }
+      }
+    ],
+    "parameters": {
+      "Left": []
+    },
+    "nullable": [
+      true
+    ]
+  },
+  "hash": "aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42"
+}
diff --git a/crates/bin/docs_rs_builder/.sqlx/query-aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42.json b/crates/bin/docs_rs_builder/.sqlx/query-aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42.json
new file mode 100644
index 000000000..d6ea91543
--- /dev/null
+++ b/crates/bin/docs_rs_builder/.sqlx/query-aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42.json
@@ -0,0 +1,26 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "SELECT cov.total_items\n                    FROM\n                        crates as c\n                        INNER JOIN releases AS r ON c.id = r.crate_id\n                        LEFT OUTER JOIN doc_coverage AS cov ON r.id = cov.release_id\n                ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "total_items",
+        "type_info": "Int4",
+        "origin": {
+          "Table": {
+            "table": "doc_coverage",
+            "name": "total_items"
+          }
+        }
+      }
+    ],
+    "parameters": {
+      "Left": []
+    },
+    "nullable": [
+      true
+    ]
+  },
+  "hash": "aad790aa7ef85357e7f57c83b21621d5a82ef6a5333a617b1d2fb8631ebe9b42"
+}
diff --git a/crates/bin/docs_rs_builder/src/docbuilder/rustwide_builder.rs b/crates/bin/docs_rs_builder/src/docbuilder/rustwide_builder.rs
index 5ee801d12..80991e406 100644
--- a/crates/bin/docs_rs_builder/src/docbuilder/rustwide_builder.rs
+++ b/crates/bin/docs_rs_builder/src/docbuilder/rustwide_builder.rs
@@ -1891,6 +1891,7 @@ mod tests {
     #[test_case("scsys-macros", Version::new(0, 2, 6))]
     #[test_case("scsys-derive", Version::new(0, 2, 6))]
     #[test_case("thiserror-impl", Version::new(1, 0, 26))]
+    #[test_case("contained-macros", Version::new(0, 2, 5))]
     #[ignore]
     fn test_proc_macro(crate_: &'static str, version: Version) -> Result<()> {
         let env = TestEnvironment::new()?;
@@ -1905,6 +1906,23 @@ mod tests {
                 .successful
         );
 
+        // check coverage
+        let row = block_on_async_with_conn!(env, |mut conn| async {
+            sqlx::query!(
+                r#"SELECT cov.total_items
+                    FROM
+                        crates as c
+                        INNER JOIN releases AS r ON c.id = r.crate_id
+                        LEFT OUTER JOIN doc_coverage AS cov ON r.id = cov.release_id
+                "#
+            )
+            .fetch_one(&mut *conn)
+            .await
+            .map_err(Into::into)
+        })?;
+
+        assert!(row.total_items.unwrap() > 0);
+
         let storage = env.blocking_storage()?;
 
         // doc archive exists
@@ -1915,6 +1933,23 @@ mod tests {
         let source_archive = source_archive_path(&crate_, &version);
         assert!(storage.exists(&source_archive)?);
 
+        // test if rustdoc json was created
+        assert!(
+            storage
+                .list_prefix(&format!(
+                    "rustdoc-json/{}/{}/x86_64-unknown-linux-gnu/",
+                    crate_, version
+                ))
+                .filter_map(|res| res.ok())
+                .find(|path| {
+                    path.ends_with(&format!(
+                        "{}_{}_x86_64-unknown-linux-gnu_latest.json.zst",
+                        crate_, version
+                    ))
+                })
+                .is_some()
+        );
+
         Ok(())
     }
 
diff --git a/crates/lib/metadata/lib.rs b/crates/lib/metadata/lib.rs
index bdc29c2cb..4faad7d2c 100644
--- a/crates/lib/metadata/lib.rs
+++ b/crates/lib/metadata/lib.rs
@@ -300,10 +300,16 @@ impl Metadata {
                 .expect("serializing a string should never fail")
                 .to_string();
             cargo_args.push(format!("build.rustflags={rustflags}"));
-            cargo_args.push("-Zhost-config".into());
-            cargo_args.push("-Ztarget-applies-to-host".into());
-            cargo_args.push("--config".into());
-            cargo_args.push(format!("host.rustflags={rustflags}"));
+            if !self.proc_macro {
+                // Proc-macro crates are built only for the host and we deliberately omits
+                // --target for them, so Cargo already applies build.rustflags to their build.
+                // Enabling host config instead suppresses build.rustdocflags for that host build,
+                // dropping custom rustdoc flags and JSON output.
+                cargo_args.push("-Zhost-config".into());
+                cargo_args.push("-Ztarget-applies-to-host".into());
+                cargo_args.push("--config".into());
+                cargo_args.push(format!("host.rustflags={rustflags}"));
+            }
         }
 
         cargo_args.push("--config".into());