this derivation will be built:
  /nix/store/nbq3j2h0pqcax42gy1ylm68kqcvrvl34-fast-18053.drv
building '/nix/store/nbq3j2h0pqcax42gy1ylm68kqcvrvl34-fast-18053.drv'
fast-18053> tribuchet: building on jamie
fast-18053> Error: remote build failed: no connected worker builds for system x86_64-linux
error: Cannot build '/nix/store/nbq3j2h0pqcax42gy1ylm68kqcvrvl34-fast-18053.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ggp4zcbxi6ni3l8k2wwd80dnzkadk7rg-fast-18053
       Last 2 log lines:
       > tribuchet: building on jamie
       > Error: remote build failed: no connected worker builds for system x86_64-linux
       For full logs, run:
         nix log /nix/store/nbq3j2h0pqcax42gy1ylm68kqcvrvl34-fast-18053.drv