this derivation will be built:
  /nix/store/ik57ay8sg6f5ci8aj5jkfxfcx3fzcnj6-interpolate-conformance.drv
building '/nix/store/ik57ay8sg6f5ci8aj5jkfxfcx3fzcnj6-interpolate-conformance.drv' on 'ssh-ng://nix-remote-builder@bld3.m.ntd.one'
building '/nix/store/ik57ay8sg6f5ci8aj5jkfxfcx3fzcnj6-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-29T18:28:28.858Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-29T18:28:29.244Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-29T18:28:29.629Z level=INFO msg="Upload complete. (849ms)"