From 12494b88bda11a12d9f0f60bffd46ba678b31c2b Mon Sep 17 00:00:00 2001
From: Denis Cornehl <denis@cornehl.org>
Date: Sat, 14 Feb 2026 06:25:38 +0100
Subject: [PATCH 1/2] update build-time metric histogram buckets

---
 crates/bin/docs_rs_builder/src/metrics.rs | 43 ++++++++++++-----------
 1 file changed, 22 insertions(+), 21 deletions(-)

diff --git a/crates/bin/docs_rs_builder/src/metrics.rs b/crates/bin/docs_rs_builder/src/metrics.rs
index d115f8625..68710502f 100644
--- a/crates/bin/docs_rs_builder/src/metrics.rs
+++ b/crates/bin/docs_rs_builder/src/metrics.rs
@@ -15,27 +15,28 @@ pub const DOCUMENTATION_SIZE_BUCKETS: &[f64; 16] = &[
 
 /// the measured times of building crates will be put into these buckets
 pub const BUILD_TIME_HISTOGRAM_BUCKETS: &[f64] = &[
-    30.0,   // 0.5
-    60.0,   // 1
-    120.0,  // 2
-    180.0,  // 3
-    240.0,  // 4
-    300.0,  // 5
-    360.0,  // 6
-    420.0,  // 7
-    480.0,  // 8
-    540.0,  // 9
-    600.0,  // 10
-    660.0,  // 11
-    720.0,  // 12
-    780.0,  // 13
-    840.0,  // 14
-    900.0,  // 15
-    1200.0, // 20
-    1800.0, // 30
-    2400.0, // 40
-    3000.0, // 50
-    3600.0, // 60
+    5.0,    // 5s
+    10.0,   // 10s
+    15.0,   // 15s
+    20.0,   // 20s
+    25.0,   // 25s
+    30.0,   // 30s
+    45.0,   // 45s
+    60.0,   // 1 min
+    90.0,   // 1.5 min
+    120.0,  // 2 min
+    150.0,  // 2.5 min
+    180.0,  // 3 min
+    210.0,  // 3.5 min
+    240.0,  // 4 min
+    270.0,  // 4.5 min
+    300.0,  // 5 min
+    420.0,  // 7 min
+    600.0,  // 10 min
+    900.0,  // 15 min
+    1200.0, // 20 min
+    1800.0, // 30 min
+    3600.0, // 60 min
 ];
 
 #[derive(Debug)]

From d2e6be371250d0bf6de0009778c060c61466bb67 Mon Sep 17 00:00:00 2001
From: Denis Cornehl <denis@cornehl.org>
Date: Sat, 14 Feb 2026 06:26:31 +0100
Subject: [PATCH 2/2] add build-result (success/fail/error) to build-time
 metric

---
 crates/bin/docs_rs_builder/src/build_queue.rs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/crates/bin/docs_rs_builder/src/build_queue.rs b/crates/bin/docs_rs_builder/src/build_queue.rs
index 4c7e46397..9ad611e0c 100644
--- a/crates/bin/docs_rs_builder/src/build_queue.rs
+++ b/crates/bin/docs_rs_builder/src/build_queue.rs
@@ -6,6 +6,7 @@ use docs_rs_context::Context;
 use docs_rs_fastly::CdnBehaviour as _;
 use docs_rs_logging::BUILD_PACKAGE_TRANSACTION_NAME;
 use docs_rs_utils::{Handle, retry};
+use opentelemetry::KeyValue;
 use std::time::Instant;
 use tracing::{error, info_span};
 
@@ -25,7 +26,22 @@ fn process_next_crate(
             let instant = Instant::now();
             let res = f(to_process);
             let elapsed = instant.elapsed().as_secs_f64();
-            builder_metrics.build_time.record(elapsed, &[]);
+            builder_metrics.build_time.record(
+                elapsed,
+                &[KeyValue::new(
+                    "result",
+                    match &res {
+                        Ok(summary) => {
+                            if summary.successful {
+                                "success"
+                            } else {
+                                "failed"
+                            }
+                        }
+                        Err(_) => "error",
+                    },
+                )],
+            );
             res
         };