this derivation will be built:
  /nix/store/8vy2lf7bmql3qs22zymzdj2jivgd6raz-iets-nextest-0.1.0.drv
building '/nix/store/8vy2lf7bmql3qs22zymzdj2jivgd6raz-iets-nextest-0.1.0.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=22&system=aarch64-linux'
building '/nix/store/8vy2lf7bmql3qs22zymzdj2jivgd6raz-iets-nextest-0.1.0.drv' on farm.numtide.com:50051
iets-nextest-0.1.0> elastic-arm-6e5fc731: building 8vy2lf7bmql3qs22zymzdj2jivgd6raz-iets-nextest-0.1.0.drv
iets-nextest-0.1.0> Running phase: unpackPhase
iets-nextest-0.1.0> unpacking source archive /nix/store/az2z18n1jxnzzjwjxn6k2vy7z0135mdp-source