this derivation will be built:
  /nix/store/wxk2dg1zni83ylndx5vfrk31rpnbcbjn-niks3-go-unit-tests.drv
error: build of '/nix/store/wxk2dg1zni83ylndx5vfrk31rpnbcbjn-niks3-go-unit-tests.drv' on 'ssh-ng://customer@mac02' failed: Cannot build '/nix/store/wxk2dg1zni83ylndx5vfrk31rpnbcbjn-niks3-go-unit-tests.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/daznn4qq18ia0px3sxd476wyq0pzksji-niks3-go-unit-tests
       Last 25 log lines:
       >     --- PASS: TestShutdownFinishesInFlightPush/completes (0.11s)
       >     --- PASS: TestShutdownFinishesInFlightPush/hung_push_bounded_by_the_drain_timeout (0.21s)
       > 2026/09/24 17:47:15 ERROR Drain finished with paths left in queue remaining=4
       > 2026/09/24 17:47:15 ERROR Accept failed error="too many open files"
       > 2026/09/24 17:47:15 ERROR Drain finished with paths left in queue remaining=3
       > --- PASS: TestDrainTimeoutDuringIsolation (0.01s)
       >     --- PASS: TestDrainTimeoutDuringIsolation/probe_cut_short (0.21s)
       >     --- PASS: TestDrainTimeoutDuringIsolation/probe_outlasts_the_deadline (0.31s)
       > 2026/09/24 17:47:15 ERROR Accept failed error="too many open files"
       > --- PASS: TestServerBacksOffOnAcceptErrors (0.64s)
       > 2026/09/24 17:47:15 INFO Uploading batch count=1
       > 2026/09/24 17:47:15 INFO Uploading batch count=1
       > 2026/09/24 17:47:15 INFO Uploading batch count=1
       > 2026/09/24 17:47:15 ERROR Upload failed error="upload failed" count=1
       > 2026/09/24 17:47:15 INFO Uploading batch count=1
       > 2026/09/24 17:47:15 ERROR Upload failed error="upload failed" count=1
       > 2026/09/24 17:47:15 INFO Uploading batch count=1
       > 2026/09/24 17:47:15 ERROR Upload failed error="upload failed" count=1
       > 2026/09/24 17:47:15 INFO Uploading batch count=1
       > 2026/09/24 17:47:15 ERROR Upload failed error="upload failed" count=1
       > 2026/09/24 17:47:15 ERROR Drain finished with paths left in queue remaining=1
       > --- PASS: TestRunNotBlockedByPoisonHead (1.05s)
       > --- PASS: TestQueueRemoveLargeClosure (1.16s)
       > --- PASS: TestQueueEnqueueWaitsOutSlowWriter (6.01s)
       > FAIL
       For full logs, run:
         nix log /nix/store/wxk2dg1zni83ylndx5vfrk31rpnbcbjn-niks3-go-unit-tests.drv
error: Cannot build '/nix/store/wxk2dg1zni83ylndx5vfrk31rpnbcbjn-niks3-go-unit-tests.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/daznn4qq18ia0px3sxd476wyq0pzksji-niks3-go-unit-tests