this derivation will be built:
  /nix/store/z05pgig3a1pakhkla74glkq8ykg0hp9h-interpolate-conformance.drv
building '/nix/store/z05pgig3a1pakhkla74glkq8ykg0hp9h-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=21&system=aarch64-linux'
building '/nix/store/z05pgig3a1pakhkla74glkq8ykg0hp9h-interpolate-conformance.drv' on farm.numtide.com:50051
interpolate-conformance> bld4: building z05pgig3a1pakhkla74glkq8ykg0hp9h-interpolate-conformance.drv
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy

upload niks3: ok