this derivation will be built:
  /nix/store/3h5936255n8r0x1f60hj2dhp8r84z6m3-nix-grpc-store-exit-stress.drv
error: Cannot build '/nix/store/3h5936255n8r0x1f60hj2dhp8r84z6m3-nix-grpc-store-exit-stress.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/6rm5dz0cqhqi82r2g88m6flg2n6db0ch-nix-grpc-store-exit-stress
       Last 18 log lines:
       > tribuchet: building on mac02
       > Store URL: grpc://127.0.0.1:26691?ca-cert=/private/var/tb/2/scratch/b1c4d3e62e92d85f/build/ca.pem
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > 127.0.0.1:26691: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused, retrying
       > error: gRPC StoreInfo on '127.0.0.1:26691' failed: failed to connect to all addresses; last error: UNKNOWN: ipv4:127.0.0.1:26691: Failed to connect to remote host: Connection refused
       >        hint: could not reach the server (TCP/DNS), not a certificate problem. Set NIX_GRPC_DEBUG=1 for a handshake trace.
       > error: while processing connection: user '_tribuchetbld2' is not allowed to connect to the Nix daemon
       > shutting downts=2026-11-12T13:32:59Z level=info event=roles builder=1 scheduler=1 scheduler_addr="" advertise=127.0.0.1:26691 niks3="" max_jobs=4
       > ts=2026-11-12T13:32:59Z level=info event=startup listen=127.0.0.1:26691 proxy_socket=/private/var/tb/2/scratch/b1c4d3e62e92d85f/build/daemon.sock
       > ts=2026-11-12T13:32:59Z level=info event=unhealthy reason=local_daemon
       > nix-grpc-daemon: error: WorkerSession: first message must be Hello
       For full logs, run:
         nix log /nix/store/3h5936255n8r0x1f60hj2dhp8r84z6m3-nix-grpc-store-exit-stress.drv