this derivation will be built:
  /nix/store/9dgflp4xxq9jhgh3izbmbcirdnh998fz-fast-18042.drv
building '/nix/store/9dgflp4xxq9jhgh3izbmbcirdnh998fz-fast-18042.drv'
fast-18042> tribuchet: building on jamie
fast-18042> Error: remote build failed: no connected worker builds for system x86_64-linux
error: Cannot build '/nix/store/9dgflp4xxq9jhgh3izbmbcirdnh998fz-fast-18042.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/sm2nw037p1ryxsj94lsyw88b91zrk162-fast-18042
       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/9dgflp4xxq9jhgh3izbmbcirdnh998fz-fast-18042.drv