this derivation will be built:
  /nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv
building '/nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv'
minihydra-0.1.0> tribuchet: building on mac02
minihydra-0.1.0> tribuchet worker error: connecting to the local nix-daemon: serverMagic: io error unexpected end-of-file: unexpected end-of-file
error: Cannot build '/nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/059h7vdzmmgklm2caxk59laakhaif1xk-minihydra-0.1.0-dist
         /nix/store/3gabmzfxmrlswfyjhikwga8y88qz3vwv-minihydra-0.1.0
       Last 2 log lines:
       > tribuchet: building on mac02
       > tribuchet worker error: connecting to the local nix-daemon: serverMagic: io error unexpected end-of-file: unexpected end-of-file
       For full logs, run:
         nix log /nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv


nixbot: transient error detected, retrying once

this derivation will be built:
  /nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv
building '/nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv'
minihydra-0.1.0> tribuchet: building on mac02
minihydra-0.1.0> tribuchet worker error: connecting to the local nix-daemon: serverMagic: io error unexpected end-of-file: unexpected end-of-file
error: Cannot build '/nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/059h7vdzmmgklm2caxk59laakhaif1xk-minihydra-0.1.0-dist
         /nix/store/3gabmzfxmrlswfyjhikwga8y88qz3vwv-minihydra-0.1.0
       Last 2 log lines:
       > tribuchet: building on mac02
       > tribuchet worker error: connecting to the local nix-daemon: serverMagic: io error unexpected end-of-file: unexpected end-of-file
       For full logs, run:
         nix log /nix/store/v45ak4pwgb1ny8c5smd9fbmbp56zqwsp-minihydra-0.1.0.drv