Sort perf builds in the same order as the PR description

site/src/github.rs

@@ -38,15 +38,8 @@ pub async fn unroll_rollup(
         format!("[{display}]({})", commit_link(s))
     };
 
-    // Sort rolled up commits by their PR number in ascending order, so that they have the
-    // same ordering as in the rollup PR description.
-    let mut unrolled_builds: Vec<UnrolledCommit> =
-        enqueue_unrolled_try_builds(&gh_client, rollup_merges, previous_master).await?;
-    // The number should really be an integer, but if not, we will just sort the "non-integer" PRs
-    // first.
-    unrolled_builds.sort_by_cached_key(|commit| commit.original_pr_number.parse::<u64>().ok());
-
-    let mapping = unrolled_builds
+    let mapping = enqueue_unrolled_try_builds(&gh_client, rollup_merges, previous_master)
+        .await?
         .into_iter()
         .fold(String::new(), |mut string, c| {
             use std::fmt::Write;

site/src/request_handlers/github.rs

@@ -52,7 +52,6 @@ async fn handle_push(ctxt: Arc<SiteCtxt>, push: github::Push) -> ServerResult<gi
     tokio::spawn(async move {
         let rollup_merges = commits
             .iter()
-            .rev()
             .filter(|c| c.message.starts_with("Rollup merge of #"));
         let result =
             unroll_rollup(gh_client, rollup_merges, &previous_master, rollup_pr_number).await;