this derivation will be built:
  /nix/store/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv
building '/nix/store/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv'
nix-shell> tribuchet: building on mac02
nix-shell> 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/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/r9kcfv5avbbmw84rjkxykvn5kajwnf5d-nix-shell
       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/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv


nixbot: transient error detected, retrying once

this derivation will be built:
  /nix/store/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv
building '/nix/store/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv'
nix-shell> tribuchet: building on mac02
nix-shell> 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/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/r9kcfv5avbbmw84rjkxykvn5kajwnf5d-nix-shell
       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/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv