Hello, I’m under the impression that sometimes, when the server replies to ‘worker-request-work’ messages, its reply is received by more than just the target worker, leading to builds being performed twice:
--8<---------------cut here---------------start------------->8--- ludo@berlin ~$ sudo grep lyhz5d1jb396m32dy0fs9h8vqzw95ddp /var/log/cuirass-remote-server.log 2023-12-23 00:15:29 141.80.167.184 (0LFowqzr): build started: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv'. 2023-12-23 00:18:41 fetching 1 outputs of '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' from http://141.80.167.184:5558 2023-12-23 00:18:45 build succeeded: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' 2023-12-23 00:21:20 141.80.167.159 (oNzYXCv5): build started: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv'. 2023-12-23 00:24:31 fetching 1 outputs of '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' from http://141.80.167.159:5558 2023-12-23 00:24:32 build succeeded: '/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' ludo@berlin ~$ sudo ssh root@141.80.167.184 grep lyhz5d1jb396m32dy0fs9h8vqzw95ddp /var/log/cuirass-remote-worker.log 2023-12-23 00:12:32 0LFowqzr: building derivation `/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' (system: x86_64-linux) 2023-12-23 00:12:54 0LFowqzr: derivation /gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv build succeeded. ludo@berlin ~$ sudo ssh root@141.80.167.159 grep lyhz5d1jb396m32dy0fs9h8vqzw95ddp /var/log/cuirass-remote-worker.log 2023-12-23 00:17:51 oNzYXCv5: building derivation `/gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv' (system: x86_64-linux) 2023-12-23 00:18:17 oNzYXCv5: derivation /gnu/store/lyhz5d1jb396m32dy0fs9h8vqzw95ddp-cdrdao-1.2.5.drv build succeeded. --8<---------------cut here---------------end--------------->8--- This is with Cuirass 1.2.0-1.bdc1f9f. To be continued… Ludo’.