this derivation will be built:
  /nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv
building '/nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv' on 'ssh-ng://nix@jamie'
building '/nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv'
flaky-4> flaky failure
error: build of '/nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv' on 'ssh-ng://nix@jamie' failed: Cannot build '/nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/r06b4mhfac139kw6g5sqn91c2748hr2j-flaky-4
       Last 1 log lines:
       > flaky failure
       For full logs, run:
         nix log /nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv
error: Cannot build '/nix/store/qj0621ja5pf9f038135pzg321z76x27n-flaky-4.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/r06b4mhfac139kw6g5sqn91c2748hr2j-flaky-4