this derivation will be built:
  /nix/store/f28rwapj2135fwxzrk2mwc1hm0jmflfg-fast-18051.drv
building '/nix/store/f28rwapj2135fwxzrk2mwc1hm0jmflfg-fast-18051.drv'
fast-18051> tribuchet: building on jamie
fast-18051> Error: remote build failed: no connected worker builds for system x86_64-linux
error: Cannot build '/nix/store/f28rwapj2135fwxzrk2mwc1hm0jmflfg-fast-18051.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/p91fpmdx58x2j42rqdslsw425cijmw36-fast-18051
       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/f28rwapj2135fwxzrk2mwc1hm0jmflfg-fast-18051.drv