Improve showing why a line was shown in deployment log

src/batou/component.py

@@ -372,7 +372,9 @@ def deploy(self, predict_only=False):
             if sub_component.changed:
                 self.changed = True
 
-        output.buffer("annotate", self.host.name + " > " + self._breadcrumbs)
+        output.buffer(
+            "annotate", f"{self.host.name} > {self._breadcrumbs}: update"
+        )
 
         if not os.path.exists(self.workdir):
             os.makedirs(self.workdir)
@@ -399,9 +401,14 @@ def deploy(self, predict_only=False):
 
         output.clear_buffer()
 
-        if self.timer.above_threshold(verify=1, update=1, total=10):
+        took_too_long, steps_too_long = self.timer.above_threshold(
+            verify=1, update=1, total=10
+        )
+        if took_too_long:
             output.annotate(
                 f"{self.host.name} > {self._breadcrumbs} [{self.timer.humanize('total', 'verify', 'update', 'sub')}]"
+                + ", ".join(steps_too_long)
+                + " took too long",
             )
 
     def verify(self):

src/batou/utils.py

@@ -545,17 +545,19 @@ def step(self, note):
 
     def above_threshold(self, **thresholds):
         """
-        Return true if any of the steps took longer than the given threshold.
+        Return tuple with true if any of the steps took longer than the given threshold.
         "total" is a special step that is the sum of all other steps.
+        Second element is a list of the steps that took longer than the threshold.
         """
 
         total = sum(self.durations.values())
+        took_longer = []
         for note, duration in self.durations.items():
             if note in thresholds and duration > thresholds[note]:
-                return True
+                took_longer.append(note)
         if "total" in thresholds and total > thresholds["total"]:
-            return True
-        return False
+            took_longer.append("total")
+        return bool(took_longer), took_longer
 
     def humanize(self, *steps):
         """