Less verbosity

Dependencies

• [2] HUUZFPPK Fix race between the queue monitor and the builder threads
• [3] 24BMQDZA Start of single-process hydra-queue-runner
• [4] ENXUSMSV Make concurrency more robust
• [5] GKZN4UV7 Make the queue monitor more robust, and better debug output

Change contents

• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 724
  [3.4559]→[3.11653:11654](∅→∅),[3.11653]→[3.11653:11654](∅→∅),[3.11654]→[3.1276:1354](∅→∅)
  −

  − printMsg(lvlDebug, format("considering derivation ‘%1%’") % drvPath);
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 729
  [2.1717]

  [2.1717]
  +

  + printMsg(lvlDebug, format("considering derivation ‘%1%’") % drvPath);