this derivation will be built:
  /nix/store/cwqxnwxm94av4klsxwrzs5pchkw49vns-pi-0.79.9.drv
building '/nix/store/cwqxnwxm94av4klsxwrzs5pchkw49vns-pi-0.79.9.drv' on 'ssh-ng://customer@mac02'
error (ignored): write of 8 bytes: Broken pipe
error: write of 4112 bytes: Broken pipe
error: Cannot build '/nix/store/cwqxnwxm94av4klsxwrzs5pchkw49vns-pi-0.79.9.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/68r5vmx30zz0ma9r0lz9fvb8rw45hiih-pi-0.79.9