these 16 derivations will be built:
  /nix/store/2b7j5n1sj1k1pwq8y0vln1p3mqglk7jd-unit-nix-grpc-daemon-strict.service.drv
  /nix/store/pq7jssphh8la4w0wcy9xgzb6iimvfhvi-nix.conf.drv
  /nix/store/wsdjz0lccj2808wlz5ycfzl2zmfab1d1-X-Restart-Triggers-nix-daemon.drv
  /nix/store/d4i7kmi9sgw6g3zz0j7x8rl747qyr8qc-unit-nix-daemon.service.drv
  /nix/store/hj9p6d8x8x47n5jx6cpwn9lipd5y44a4-unit-nix-grpc-daemon.service.drv
  /nix/store/qya8msv0rp357rllf666c5xqgahjwp9d-unit-nix-grpc-daemon-mtls.service.drv
  /nix/store/8czfzcw6vb4aba05q8af95w39n4k4618-system-units.drv
  /nix/store/s9n73g58dknj6z8vih04x84ak14pw1n1-etc.drv
  /nix/store/c7bzrg5p6flq35092w0v1zr1l9gpd4n5-activate.drv
  /nix/store/wnwsxr3jnzlv9bvb7v73hafszvjvxhd1-nixos-system-machine-test.drv
  /nix/store/xbpz65wj66mjb94bwzyxvjjlg7g9ijbb-closure-info.drv
  /nix/store/ywcn8rmw174wzq8gz9jvs5r1vapdshi1-run-nixos-vm.drv
  /nix/store/8qpxadqp1fk9q83skp8gm18grjvqijzk-nixos-vm.drv
  /nix/store/wrl2rlwv8vy0njb2plfnc1s386ifd7qj-driverConfiguration.json.drv
  /nix/store/l0fj7fpbamdm226x4zpaj8qwc5lhh1l4-nixos-test-driver-nix-grpc-store-upload.drv
  /nix/store/b1lyfn2w0lhkdzn4l67p3khcs21pm8qj-vm-test-run-nix-grpc-store-upload.drv
error: Cannot build '/nix/store/b1lyfn2w0lhkdzn4l67p3khcs21pm8qj-vm-test-run-nix-grpc-store-upload.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hmzg88im5850ajrgnq1p99rhlm378x5d-vm-test-run-nix-grpc-store-upload
       Last 25 log lines:
       > machine # [   70.829681] systemd[1]: session-42.scope: Deactivated successfully.
       > machine # [   70.831514] systemd-logind[586]: Session 42 logged out. Waiting for processes to exit.
       > machine # [   70.833472] systemd-logind[586]: Removed session 42.
       > machine # [   70.858347] systemd[1]: SSH Host Keys Generation skipped, no trigger condition checks were met.
       > machine # [   70.860436] systemd[1]: Started SSH per-connection Daemon (vsock:2:41).
       > machine # [   70.912229] sshd-session[1452]: pam_unix(sshd:auth): user [root] has blank password; authenticated without it
       > machine # [   70.917101] sshd-session[1452]: Accepted none for root from UNKNOWN port 65535 ssh2
       > machine # [   70.924227] sshd-session[1452]: pam_unix(sshd:session): session opened for user root(uid=0) by (uid=0)
       > machine # [   70.929782] systemd-logind[586]: New session '43' of user 'root' with class 'user' and type 'tty'.
       > machine # [   70.931254] systemd[1]: Started Session 43 of User root.
       > machine # [   70.948665] sshd-session[1458]: Received disconnect from UNKNOWN port 65535:11: disconnected by user
       > machine # [   70.949976] sshd-session[1458]: Disconnected from user root UNKNOWN port 65535
       > machine # [   70.951068] sshd-session[1452]: pam_unix(sshd:session): session closed for user root
       > machine # [   70.952920] systemd[1]: sshd-vsock@41-4123-3:22-2:41.service: Deactivated successfully.
       > machine # [   70.956092] systemd[1]: session-43.scope: Deactivated successfully.
       > machine # [   70.958032] systemd-logind[586]: Session 43 logged out. Waiting for processes to exit.
       > machine # [   70.960125] systemd-logind[586]: Removed session 43.
       > machine # [   71.063881] systemd[1]: SSH Host Keys Generation skipped, no trigger condition checks were met.
       > machine # [   71.067529] systemd[1]: Started SSH per-connection Daemon (vsock:2:42).
       > machine # [   71.166489] sshd-session[1463]: pam_unix(sshd:auth): user [root] has blank password; authenticated without it
       > machine # [   71.176729] sshd-session[1463]: Accepted none for root from UNKNOWN port 65535 ssh2
       > machine # [   71.189714] sshd-session[1463]: pam_unix(sshd:session): session opened for user root(uid=0) by (uid=0)
       > machine # [   71.198329] systemd-logind[586]: New session '44' of user 'root' with class 'user' and type 'tty'.
       > machine # [   71.208530] systemd[1]: Started Session 44 of User root.
       > tribuchet: remote build failed: no connected worker builds for system x86_64-linux
       For full logs, run:
         nix log /nix/store/b1lyfn2w0lhkdzn4l67p3khcs21pm8qj-vm-test-run-nix-grpc-store-upload.drv