this derivation will be built:
  /nix/store/l3h2adgyq9qgr5ivp6cfkz3gx1r8fk85-interpolate-conformance.drv
building '/nix/store/l3h2adgyq9qgr5ivp6cfkz3gx1r8fk85-interpolate-conformance.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=20&system=aarch64-linux'
warning: l3h2adgyq9qgr5ivp6cfkz3gx1r8fk85-interpolate-conformance.drv: no connected, non-draining worker for system 'aarch64-linux' offers features {}, the workers offer {}, waiting up to 120s for a worker
building '/nix/store/l3h2adgyq9qgr5ivp6cfkz3gx1r8fk85-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> elastic-arm-7477f843: building l3h2adgyq9qgr5ivp6cfkz3gx1r8fk85-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

upload niks3: ok