From 719df63190e885e0503bbc7029d403fdd666b5ef Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Tue, 25 Jul 2017 19:46:24 -0500
Subject: [PATCH] queue-monitor: never move lastBuildId forward without
 processing jobs.

---
 src/hydra-queue-runner/queue-monitor.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hydra-queue-runner/queue-monitor.cc b/src/hydra-queue-runner/queue-monitor.cc
index f94007d2..21981aa9 100644
--- a/src/hydra-queue-runner/queue-monitor.cc
+++ b/src/hydra-queue-runner/queue-monitor.cc
@@ -49,7 +49,7 @@ void State::queueMonitorLoop()
             conn->get_notifs();
 
         if (auto lowestId = buildsAdded.get()) {
-            lastBuildId = std::stoi(*lowestId) - 1;
+            lastBuildId = std::min(lastBuildId, static_cast<unsigned>(std::stoul(*lowestId) - 1));
             printMsg(lvlTalkative, "got notification: new builds added to the queue");
         }
         if (buildsRestarted.get()) {